Breastfeeding 6 weeks

Cori

My boobs have obviously gotten bigger from the milk and they got hard often when it was time to feed, now my baby is eating more efficiently and taking longer naps and my boobs look smaller, aren’t feeling hard as often as they did. I just feel like I’m losing my supply in a way? He eats fine and tugs sometimes but diaper counts are still on point so I was sure he’s getting enough. So I guess my main question is if you can lose supply exclusively breastfeeding and is it normal for your boobs to get smaller and still be making more milk for baby????