#AskTheExpert my girl baby' birth wt is 2.4 kg.now she is 3.5 kg in 2 months 45 days.is this wt is normal?

A. Yes it is normal, By two weeks, I expect a baby to return to birth weight. The average baby then gains about one ounce per day for the first month, and about one or two pounds a month until month six. Most babies double their birth weight by five or six months, and triple it by a year. Remember, though, these are averages.