I had done a gap semester due to harsh health issues and my mental health was affected, and i plan on choosing courses but there isn’t many left and i’m scared i’ll lose my funding

On January, I was focusing on my health a lot as It seemed I had a tumor that could’ve been cancerous, so i took time off to fully focus on my health and getting the help I need. Throughout what could’ve been my winter semester, I was in and out of the hospital and not mentally well just from my health alone. April was then my surgery happened and rest from the whole month.

During this, I had applied for the winter but the offer was taken away so I had to apply again which made me miss a large portion of the time that I had to pick courses. I got enrolled late and by that time the coruses filled up. I’m more concerned with osap and their inability to maybe fund in the future?

what should I do while I try to enroll in courses? how should I contact osap about this?