Feeding on schedule?

C

Are you mommas still feeding your little on a schedule through the day? We’ve been letting out little sleep through the night (8hrs) and today we started her on all formula (before she was getting 1/2 bm & 1/2 formula) but today she only ate 1 1/2 oz this morning, 5 oz a few hours after, 3 oz a few hours after that, then 5 1/2 oz around 4 & its time for her to eat again, but she’s sleeping. I’m just wondering if you guys are feeding on demand or if you’re sticking to a schedule?