Babies "patterns" changing

For all those doing kick counts you know how they say like babies regular time of being awake. So I used to like know his times for example 9-4-9 those where his most hyper hours but now it seems that all changed! Today at 9 he was so lazy or maybe asleep and instead was up at 7(ish) then again at 2:30 but i didn't  pay attention then cuz I thought eh it's not his usual time I'll count later and I'm not sure when he'll be active again but in the beginning I like sat down to do kick counts at 4 and was like 😱😱 he's not moving I did get my ten kicks in the hour but not without continuously poking and prompting him to move which is different. Could it just be that he's switching schedules lol Or is this something to be worried about?😮I feel Weird calling the dr over this as I got ten kicks in 8 minutes but I they were super subtle and roll like and I had to poke him to move