4 classes plus nursing entrance exam

All right I feel like im way over my head in thinking I can tackle all of this. I have 4 classes this spring term in order to complete my associates about time I've been in school for longer than I've liked to admit. My ultimate goal is to be in the nursing program, and after 2 failed attempts, I am starting to think it's not for me. However, I want to try again.

I just want to know if you guys think it might be too many classes on top of studying to get into the nursing program.

I don't have a job so extra time. However, I am taking care of my sick mother and doing the everyday household stuff with no help from my siblings