When should my preschooler get the flu shot?

The flu vaccine is recommended every year for everyone 6 months and older, so your preschooler should get it each fall. The AAP advises getting the dose ideally by the end of October, before flu spreads widely. If your child is between 6 months and 8 years and is getting a flu vaccine for the very first time, two doses given four weeks apart are needed, so start early. Ask your pediatrician whether your child needs one dose or two this season.

Can my 4- or 5-year-old trick-or-treat without an adult?

No. A preschooler should always have an adult along on Halloween. Walk the route together, cross streets as a group in a crosswalk and avoid mid-block crossings, stay on the sidewalk and on well-lit streets, and make sure the costume is bright or reflective with a flashlight or glow stick. Inspect all candy at home before your child eats any of it.

How do I help my child adjust when the clocks fall back?

Start about a week ahead by nudging naps and bedtime a few minutes each day in the direction the clocks will change. During the transition, get your child outside in natural morning light, keep the same nightly wind-down routine, and limit screens before bed. The fall change tends to make young kids crash earlier and wake earlier, but most children adjust within about a week if you stay consistent.

How long should my preschooler wash their hands?

At least 20 seconds. A simple trick is to hum the 'Happy Birthday' song from beginning to end twice. The CDC's five steps are wet, lather (including the backs of hands, between fingers, and under nails), scrub for 20 seconds, rinse, and dry. The most important times to wash are before eating, after using the toilet, after blowing the nose or coughing, and after coming home from preschool.

When is a fever in my preschooler serious enough to call the doctor?

Call your pediatrician if a fever lasts more than 3 days (72 hours) in a child 2 years or older, or more than 24 hours in a child under 2, or if a temperature above 104 F (40 C) keeps returning at any age. Call right away for fever with a stiff neck, breathing difficulty, an unexplained rash, repeated vomiting or diarrhea, or if your child seems very ill, unusually drowsy, or is getting worse. Trouble breathing or unresponsiveness is a 911 emergency.

Fall · Preschooler 3–6 yr

Fall Care for Preschoolers: Flu, Halloween, and Shorter Days

Fall packs a lot into a few weeks: the flu shot, Halloween night, the clocks falling back, and a new round of preschool colds. Here is how to handle each one.

Your child is 3 to 6 now, walking and talking and heading into a busy season. This guide covers the five fall tasks that matter most for preschoolers: getting the flu vaccine on time, staying safe on Halloween night, easing the daylight saving sleep shift, cutting down school-season illness with handwashing, and holding routines together as the days get darker. Each section is grounded in current guidance from the AAP and CDC, with a red-flag note so you know when to call your pediatrician.

7 min read Fall Updated June 2026

Reviewed against current AAP and CDC guidance

Get the flu shot by the end of October

The flu vaccine is recommended every year for everyone 6 months and older, so your preschooler is well past the minimum age. The AAP advises getting the dose ideally by the end of October, before flu starts circulating widely. Children younger than 5 are especially vulnerable to severe flu, hospitalization, and death, which makes the annual shot a priority at this age. If your child is between 6 months and 8 years and is being vaccinated against flu for the first time, two doses given four weeks apart are needed for full protection, so start early rather than waiting. Ask your pediatrician whether your child needs one dose or two this season.

Halloween night: be seen, cross safely, check the candy

Make the costume easy to see. Pick bright, reflective costumes, add reflective tape or glow-in-the-dark elements, and choose a light-colored treat bag.
Carry a light. Give your child a flashlight or glow stick. Use a battery-operated flameless candle, flashlight, or glow stick inside jack-o'-lanterns instead of a real flame.
Skip the mask. Use non-toxic makeup instead of a mask, which can block vision. Test the makeup on a small patch of skin a day or two ahead to rule out a reaction.
Stay with young children. A preschooler should not trick-or-treat without an adult. Walk the route together.
Cross as a group, in a crosswalk where one is available. Avoid mid-block crossings, where child pedestrian injuries are more common. Stay on the sidewalk and on well-lit streets.
Inspect treats at home before anyone eats. Wait until you are home to sort the candy. Throw away anything spoiled, unwrapped, or suspicious.
Watch for choking hazards. Hard candies, caramel apples, gum, small candies like jellybeans, gummy candy, popcorn, and anything with whole nuts are choking risks for younger children, so set those aside for any babies or toddlers at home and supervise your preschooler closely with hard or sticky candy.

The clocks fall back: easing the sleep shift

About a week before

Start nudging naps and bedtime a few minutes each day in the direction the clocks will change.
Keep the shift small and steady rather than making one large jump the night of the change.

Gradual is the goal. A few minutes a day adds up by the weekend.

Each day during the transition

Get your child outside in natural daylight, especially in the morning. Sunlight is a strong signal for the body's internal clock.
Keep the same wind-down routine every night so it still signals that it is time to sleep.
Limit screens for at least an hour before bed, since the light can trick the brain into thinking it is still daytime.

Holding the routine steady matters more than the exact clock time.

The week after

Expect a few drowsy days and some early wake-ups while your child catches up.
Stay consistent with bedtime, naps, and morning light rather than changing tactics day to day.

Kids usually settle within about a week. Consistency carries you through it.

School illness season: handwashing that actually works

The five steps

Wet hands with clean running water, then apply soap.
Lather by rubbing hands together, including the backs of the hands, between the fingers, and under the nails.
Scrub for at least 20 seconds. Hum the 'Happy Birthday' song from beginning to end twice as a timer.
Rinse well under clean running water.
Dry with a clean towel or air dryer.

Singing the timer song turns 20 seconds into something a preschooler can do on their own.

Key times to wash

Before and after eating.
After using the toilet.
After blowing the nose, coughing, or sneezing.
After getting home from preschool or a playdate.

Targeting these moments matters more than washing constantly.

When soap and water are not available

Use an alcohol-based hand sanitizer with at least 60% alcohol.
Keep sanitizer out of reach between uses and supervise application.

Soap and water is the first choice. Sanitizer is the backup for on the go.

Holding routines as the days get shorter

As daylight shrinks, evenings get dark fast and it is easy for bedtime, meals, and outdoor time to drift. For a preschooler, the steady pattern is what keeps sleep and mood on track. Keep the wind-down routine the same each night. Get outside while there is still light, even briefly, since daytime sun exposure supports the sleep cycle. Hold meal and nap times consistent. You do not need a new plan for fall, just protection of the routine you already have against the early dark.

When to call your pediatrician

A temperature above 104 F (40 C) that keeps returning, at any age.
A fever lasting more than 24 hours in a child under 2 years.
A fever lasting more than 3 days (72 hours) in a child 2 years and older.
Fever with a stiff neck, severe headache, severe sore throat, severe ear pain, breathing difficulty, an unexplained rash, or repeated vomiting or diarrhea.
A child who seems very ill, is unusually drowsy, or is very fussy.
A child who still 'acts sick' once the fever comes down, or who seems to be getting worse.

Call 911 right away

Quick answers

When should my preschooler get the flu shot?: The flu vaccine is recommended every year for everyone 6 months and older, so your preschooler should get it each fall. The AAP advises getting the dose ideally by the end of October, before flu spreads widely. If your child is between 6 months and 8 years and is getting a flu vaccine for the very first time, two doses given four weeks apart are needed, so start early. Ask your pediatrician whether your child needs one dose or two this season.
Can my 4- or 5-year-old trick-or-treat without an adult?: No. A preschooler should always have an adult along on Halloween. Walk the route together, cross streets as a group in a crosswalk and avoid mid-block crossings, stay on the sidewalk and on well-lit streets, and make sure the costume is bright or reflective with a flashlight or glow stick. Inspect all candy at home before your child eats any of it.
How do I help my child adjust when the clocks fall back?: Start about a week ahead by nudging naps and bedtime a few minutes each day in the direction the clocks will change. During the transition, get your child outside in natural morning light, keep the same nightly wind-down routine, and limit screens before bed. The fall change tends to make young kids crash earlier and wake earlier, but most children adjust within about a week if you stay consistent.
How long should my preschooler wash their hands?: At least 20 seconds. A simple trick is to hum the 'Happy Birthday' song from beginning to end twice. The CDC's five steps are wet, lather (including the backs of hands, between fingers, and under nails), scrub for 20 seconds, rinse, and dry. The most important times to wash are before eating, after using the toilet, after blowing the nose or coughing, and after coming home from preschool.
When is a fever in my preschooler serious enough to call the doctor?: Call your pediatrician if a fever lasts more than 3 days (72 hours) in a child 2 years or older, or more than 24 hours in a child under 2, or if a temperature above 104 F (40 C) keeps returning at any age. Call right away for fever with a stiff neck, breathing difficulty, an unexplained rash, repeated vomiting or diarrhea, or if your child seems very ill, unusually drowsy, or is getting worse. Trouble breathing or unresponsiveness is a 911 emergency.

Sources & further reading

What your baby needs, season to season.

ParentFlow tracks feeds, sleep, and milestones and surfaces what matters as your baby grows.

App Store Google Play Open Web App

This guide reflects current AAP and CDC guidance and is for educational purposes only. It does not constitute medical advice. ParentFlow is a wellness companion — not a substitute for your pediatrician. For any medical concern, contact your healthcare provider.