Babies approximately gain of 175 g to 210 g per week from birth to 3 months...

And by 5-6 months babies weight could be twice of the birth weight...

Don't worry,
Weight is good ...
By 5-6 months,your baby's weight will double...

Babies should be healthy and active...
Feed your baby on time and on demand too...

If you are breastfeeding,
You too have a healthy diet...
Avoid oily,junk,too spicy foods...

If your baby is weak, better check with the Paediatrician once...and clear your doubts...

Try to give 5-6 meals per day.. You can use homemade desi ghee in his meals and milk.
Offer more liquids, fruits and salad to improve appetite.
You can also start calcium and multivitamin supplements.
If his weight is up-to 12-13 then totally fine

It is normal.

You should continue baby vitamin drops. Don't skip. Some kids take more time for lift properly. In some kids head weight is more that time also can't lift neck. Don't worry.

Dont know much about this, but ,One of my friend had same problem as ur's & she was adviced to get stitches done for the uterus to support uterus & some injections weekly for baby's growth & to avoid another abortion & was also adviced complete bed rest.Dont take stress Consult with ur Gyneac what can b done further & what precautions needed to keep baby safe.

According to age weight is little less... But don't wry if baby is active and give dairy products nd home made food only... Potatoes , banana , curd, cheese , egg, . besan chila, suji chila , dalia,as breakfast.. and give pulses,,, rich in protein,...

Don't worry.Consult with Peaditrician about babies not sitting & about weight.What was birth weight & do they sit with support?

Don't worry.New borns do lose weight & regain .Check weight next month.If baby pees frequently then breastmilk is suffiecient

Once they started school automatically they will learn . School environment creates interest on study. Now you can start oral teaching. Show live pictures like show vegetable tell their colour. If you give any grapes start counting. And letters show daily one letter and teach words in both languages at a time means hindi and English. You have to say more times.

When Kids are not well means get ill then they normally reduce their weight not more than 1kg. After recove they will come to normal weight after 10 to 15 days. And next weight gain will be slow after 1year because their high physical activity. And observe him how much nd when he is losing weight . This age they want all nutrients. Give balanced and healthy diet.