So i was really scared that how my son will react after his 4th month vaccination as he was going through sleep regression as well but we were lucky he only cried for 1-2 min at the time of shots. After that he was not in playing mood as usual but still no fussiness or anything. Me and my husband were shopping around and he kept looking at things. After 1-2 hour he sleeps for full 1 hour i was so happy because he has not been sleeping like this from a month. Now everything is still same he is happy and again in sleep regression. I just want to ask that he is breastfed. At night time he wakes up 5-6 time for night feedings is it normal ?