Hello, thanks for your question.
At 3 years, daytime sleep is not compulsory. Children need about 10–13 hours of total sleep in 24 hours. A late evening nap (4–6 pm) often causes late night sleep, which is happening in your child.
Try to reduce or stop the evening nap, or shift it to early afternoon (1–3 pm). Aim for a night bedtime around 9–10 pm, as early night sleep is important for good growth.
There is no special food that increases height. Give a balanced diet with milk and milk products, eggs/dal, fruits, vegetables, and regular sunlight exposure. Outdoor play and good sleep routine are very important.
Height mainly depends on genetics, along with nutrition and sleep. If your child is active and growing well on the growth chart, there is usually no need to worry.
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Next Steps
If concerned, please consult a pediatrician for growth assessment
Health Tips
Growth assessment