Need advice 19 yr old w/ cat moved out from 2.5k sqft to a 450 sqft studio, kitty unhappy

Hi, first time posting. I am in a frenzy and don't know what to do. 19 years old, senior in university (graduating in 2027) with a kitty whose almost 2 years old. She was a feral kitten and was spayed at 3 months and has been with me since. I lived with my parents in a 2.5k sqft house where my cat had access to all of the area but now we live in a 450 sqft studio and she is not happy. It wasn't a healthy environment for me and my parents don't want my cat there unless I am living there. It's been 2 months and she's started meowing all the time, scratching at the outside door and also scratching at other surfaces like dresser and cabinets. I've gotten her a bunch of toys, she has a lot of vertical space in the apartment, window shelves and I dedicate 2 hours of just active play time for her.

Took her to a vet and was told she's healthy and just adjusting. Personally I don't know, she's been eating my plants and trying to eat stuff she's not supposed to. I am so lost. She is such a sweet baby, loves cuddling and my child but I am a full time student and work full time. What other options are there? Does anyone know how to help?