Getting desperate!

My baby boy was born a month early, he spent a week in the NICU, came home, and was eating fine. I’m breastfeeding, but from a bottle because he has a hard time latching onto my breast. Anyway, he will be 3 weeks old Monday, and the last couple days he seems to have forgotten how to eat completely! The milk just drips right out of his mouth, to the point where he’s soaked. We’ve tried different bottles, nipples, and feeding positions. I’m running out of ideas and have a cranky, hungry baby! Any advice is much appreciated!