Hi,my baby's birth weight was 3.7 kg. When she was 4 month old,she was 7 kg. Now she is going to be 5 months old after 8 days and her weight is 7.2 kg. She is on exclusive breastfeeding and pees about 8-9 times a day. But less interested in feeding and likes thumbsucking. What should I do ?? Does my less protein intake is the cause ??