Early Riser

Brooklyn • Elementary Teacher and Mama. Baby dust to all!!! Mom to two boys 💙
We chose to do sleep training and it worked wonders for us. If you're against sleep training I understand but please only reply with positive responses. I'm just a first time mom looking for advice. 
Gavin was sleeping from 7-7/7:30 and now he's waking up around 5:30 screaming wanting a bottle. We gave in and have been giving him an early morning feeding and putting him back to bed so he can sleep another hour or two. Has anyone experienced this regression? What do we do? How do I phase out that bottle!? He made it for months without it so why again all of a sudden!?