Baby hair loss

My LB is 3week 5 days n has started losing his hair at the front, I know this can be normal but it seems to have happened more a less in 24 hours and he is now more a less bald at the front. He still has his hair round the sides and at the back which I find wierd as that’s where most contact would be, not at the front?? Also has anyone else experienced this and how long did it take to grow back? He had beautiful hair and it’s killed me 😩😢