No ur baby is not underweight.... Even at this age weight should be around 14-15 kgs... But it's ok if baby is active n playing well n feeding well... But keep an eye on the weight if it's not inreacing rapidly... And to avoid obesity or any health issues in future.... on ur next visit Once take opinion from dr. Also... They will assure u if it's fine... And avoid packaged food...junk N maida products... Give only homemade food...

3years.brain cell will be active in sleep time.

You can give him daals Dalia +dryfruits purees fruits purees n suji ragi purees chicken liver purees fruits purees egg purees .nestle cerelac +start power vita by patanjali.for good digest n health.

You must start communicating with your child. Ask to repeat rhymes after you, Read books to your kids ,Benefits of Reading Aloud To Your Kids are Language Acquisition,Improves Listening Skills,Healthy Habit Development. Check Audi story app and help the kid to listen so he can pick words and start reading.

https://play.google.com/store/apps/details?id=listen.to.heycloudy

Yes

3 years he is

S my choice also give him phone if u think it's nit good fr ur child means teaching colourful alphabet note book she enjoy the colors and learn quickly
Buy alphabet setting puzzle ....

Give him all medicines with warm water,after food empty stomach.use yakult syrups with patanjali swashari paravahi syrup daily 2 time half spoon.2.5 ml in a day tminic syrup

My baby boy supported his head in 4 months but my elder in 6th month every baby is different from each other so please don't listen to the people take care of your baby and be calm

Hi is your baby speaking 2-4 words with meaning?