Yes to the milk vs solids. Kids are smart and they know if they can get the bottle they will skip on other foods so they can get more of that.
My 3 yr old niece kept getting a big glass of cows milk before bed. As a result, she wasn’t really eating dinner. Was underweight. They cut milk out and suddenly she’s eating a lot more.
OK. I recently had to go thru a lot of this and here’s my experiences. Every child is different… But there are some points here I think I can help with.
IMO, daycare should be helping you with potty training.
It sounds like she is forgetting whether she has diapers on or not. That’s something you can only do by going cold turkey on diapers - minus nap and sleeptime. Then immediately off again.