Boyfriend left me after I got diagnosed with epilepsy and is now coming back

I used to think that I was just a really anxious person because of personal trauma and experiences with being autistic in society but recently I’ve discovered that I also have focal aware seizures. Before realizing this, I knew my health was getting strange but I couldn’t determine the cause. This wasn’t a problem until my body was in too much pain to do my job and I had to quit and become house bound. Almost 2 months after this, I (19f) still couldn’t figure out the cause of my health condition as my anxiety worsened and my boyfriend (19m) left me over text saying that he “wasn’t good enough” for me. I understand that he was already going through a lot at work and at home when I started having seizures and I’m sure worrying about me was just stressing him out even more so in order to mentally protect himself, he “ran away” from me- hoping the distance and time would heal the rip in our relationship (it didn’t) but now he wants to come back because he feels bad for how he treated me. I’ve already forgiven him for what happened since I can’t really blame him for self-protective behavior in an already high stress environment now with a bunch of new, scary medical stuff going on. At the same time though, I feel like he’s just going to apologize without putting in the effort to help me feel secure in our friendship after leaving me feeling betrayed. Should I leave him or give him another chance to change..? This feels too complicated to figure it out by myself