Baby not sleeping?

Zoe

My son is 5 weeks old and I think he is currently going though a growth spurt as he is eating more over the past 2 days. However he also hasn’t been sleeping very much. Example last night he slept 8-10, 12-12:45, then 4-7. Then though the day he only napped about 3 hours. Now tonight he went to bed at 10 and slept until 2, then up 2-5. This is very irregular for him has he had been on a steady schedule of up for 2-3 hours then napping for about an hour then though the night he would slept 3 hours at a time. My question is is it normal for babies to sleep less during a growth spurt? I’m happy he is awake more because now we can finally play more. We have been reading books,playing with rattles and lots of tummy time. I’m just worried his body is growing but he’s not sleeping enough to help it.