My 3 month old baby's weight is constant from last 15 days. He is an exclusive breastfed baby and many a times keeps playing while taking the feed, which results in him not taking my breast after a few minutes. is it normal?

A. baby weight gain should be around 500-800g per month after birth and should be double the birth Weight at completing 4-6months exclusively Breast feed recommended maintain gap between feeds at least two hrs at day time and at night it may be 4-5hrs