He already doubled his weight. The only thing you should be taking care of is whether the baby is achieving his milestones. You can give him porridges and other semi solids now. Don’t worry about weight

Birth weight was 3.3

Most babies double their weight by 6 months and triple their weight by one year. What was your baby’s birth wight?

Hi yes it's fine, as long as the baby is active and achieving milestones then nothing to worry.