my baby is 1 month and 10 days old. he used to feed only for 5-10 minutes per session to nearly less than 5 minutes. now he only feed within 10 minutes and sometimes less than that. i tried everything to wake him during night for feeding but he only feed few minutes and he will again fall asleep. he urinate around 8-10 times and 1- 2 bowel movement per day. his birth weight was 2.9 kg and now he is 4 kg. I'm concerned about his feeding routine, as it was told to feed the baby for atleast half an hour for every session. i tried everything to wake him as he dosed off after feeding for few minutes. is it normal? what should I do?