My daughter is 5 months 11 days old. Her birth weight was 2.5kg. In first month she did not gain weight but subsequently she started gaining 500gms-650gms monthly. Now she is 5kg but she looks so tiny. Is there any thing to worry.

A. hello baby being double its birth weight neans thw baby griwth is good and baby gaining a minimum of 600 g to 800 g per month means the baby is gaining qell and incase the bm is not sufficient then give baby infant formula milk using a bpa free bottle like babyhug