My baby doesn’t want to eat what should I do?

Hello guys so my baby was a preemie she was born on October 12 and her due date was January 12 I’ve been struggling for her to eat I’ll move the bottle nipple around her lips she’ll take it but barely wants to drink and when she does she spits out the milk right away idk if she’s just growing because she’s also sleeping more! Have you guys had this problem with your little ones too?. If so I would love to hear 🥺