Baby won't finish bottle😕

Kayley • 24 years old, I have a little boy who’s 4 and I’m TTC my second baby!! 👶🏻
My son is 6 days old and he acts hungry so i make a bottle then he takes a few sips and wants to sleep again but then wants a feed within 10 mins, the amount of formula i have wasted is unbelievable. He's on formula as breastfeeding didn't work for us unfortunately, any advice mum's? 😞