my baby is 3 month old . in starting 0-3 month.my baby did toilet 15-20 times in a day. I used 5-7 diaper and he slept max to max 1.5-2 hrs in 24 hrs and awake more( total sleep time was 6-7 hrs in 24 hrs) and feed frequently and for 15-20 min in each feed. now suddenly from 2 -3 days he doesn't feed like before he feeds only 5-6 times in day for maximum 10 min each feed . and he does toilet less. it takes only 2 or 3 diaper in a day.now he sleeps more about 1 nap of 5 hrs and 1 nap of 4 hrs (total sleep time is 12-13 hrs in 24 hrs) is it normal?