Sometimes my 5 month old baby would shake and tremble slightly when he is bottle feeding.This happens when he is;bottle feeding & is half a sleep. The shake lasts for about 15 to 20 seconds. It happens 2 to 3 times a week and it started when he was about 4 months old.

why is it happening? anything to concern?

Sonam patel please guide.

I have never experienced this with my baby as he too was bottle fed. And try to exclusive breastfeed the baby. Better to talk to the pediatrician once.