friendship fallout or is it not that deep?

I (22F) and a friend of mine (21F) currently have a friendship low, though I'm not sure whether only I perceive it like this.

We have been living together for a bit more than 2 years now and I truly consider her a soulmate in some ways as I consider her to be similar to me and we've been there for each other for a long time. I also know her since I was 9. This year has been tough though. I picked up 2 jobs, thus was barely home, and she had a lot of work to do for uni and thus stayed at uni until 10 pm sometimes and there were weeks that we would not talk to each other despite living together. I also got my first boyfriend this year, so a lot of my scarce free time is used for my boyfriend.

Now, I feel like she doesnt care about me anymore as she never really tries to do some shared activities together, never texts never calls and I barely see her. Tbh, I dont put that much effort into our friendship neither but it feels so one sided if i do, so i stopped asking. I know it's kind of my fault here too, I could put in some effort too but as I dont feel valued and appreciated I feel like a clown if i do. I have tried talking it through with here via whatsapp once and it only resulted in her telling me that I never tell her when I am free and it made me feel pretty bad as I dont see that it's only my responsibility to reach out if she could do the same. Also, it's not that I am the only one here that is not home/busy/working alldaylong. I concluded from this that she's fine with us not spending any time together which hurts.

The next month, we are going to cancel the rental contract for our appartement as we have an issue with our bathroom. I have a lot on my plate right now and the bathroom issue really doesnt vex me to the point that I want to move out so I have been thinking about telling her that I dont want to move out. Moveing would also be a great pain rn and I am so busy with work and uni that I dont know whether I'll even manage to find us a new appartement. I am also not so sure whether she is going to do much for searching a new stay as she is at uni all day and thus seems busy?

Idk I have come to bear a lot of negative emotions on her and I am not sure whether I want to keep on living together with her as this situation has caused me a lot of pain and even weeks of crying about it without solving much of it. I have failed to ask her about how she feels about me lately but it does not seem that she is so fond of me rn either, f.ex. in summer she was away for a few weeks for vacation and uni stuff and went home for a weekend, so I told her I would clear my schedule to get to spend time with her only for her to spend the whole weekend with other friends. I know that I am not her priority rn, it hurt nonetheless.