my baby is 3 month old . in starting 0-3 month he passed urine 15-20 times in a day .I used 6-7 diapers per day. he slept for 6-7 hrs in a whole day ( max nap of 1.5 or 2 hrs only) .he fed frequently ( sometimes in just half an hour)and for 15-20 min each.but suddenly now from 2-3 days he passes urine less I use 2-3 diaper per day. he doesn't feed like before.now he feeds 5-6 time a day for 10 min only. he sleeps more . his sleep time is 12 hrs in 24 hrs ( one nap of 5 hrs and one nap of 4 hrs.) is it normal?