@velvetytae Gonna respond in sections, since it’s a lot :)
First of all, I’m sorry for your loss. The death of someone we care about can be a lot.
Second, college. It’s normal to change your major, if you’re not sure about what you want to do, that’s fine. Try narrowing it to a general field or area based on what you enjoy.
Three, don’t feel bad for your emotional and/or mental health not being 100%. Nobody is always at their best, so long as you’re trying and continuing onwards you’re doing good. Death is a lot and really does leave a void where they once were, especially when the loss is still fresh.
You probably feel homesick because of your feelings of isolation, you’re away from home and dealing with a lot of top of that. It’s normal that you have stressors piling up. You don’t have to pretend that he didn’t die, you have to look it in the face. It’s okay to think about it, get your feelings out. Cry when you need to, do stuff that helps you relax, it’s not healthy to keep it inside. Acceptance only comes once you’ve gone through the emotional roller coaster and let it bleed. I’m so so sorry that you had to lose someone so precious before you were ready. Just know you’re not alone, and you’re free to send me a message after this conversation if you need someone. I know it’s not much, but I do hope it helps.