SO frustrated!

Ka

Okay so my LO had started sleeping 6 hour stretches this week. I was ecstatic. But yesterday he wasn't eating efficiently and last night he went back to his old habits. Waking up every few hours only he wasn't eating, just snacking. I feel like my milk supply is going down now. Is he doing this to get ready to sleep the whole night or is he regressing? Just wish he would eat 4-6 oz every like he's supposed to 😴😴 after the first stretch of sleep I'm up constantly every 30 mins to an hour because he's so restless. I hate it.