That sounds like a good idea. It will keep your mind busy and you will still be gaining ground.
I am glad that the survival rate is good with the type of cancer your mom has. I think that the radiation treatment is a lot easier to weather than that of chemotherapy. You don't get nearly as sick, though everybody is different as to the way that their bodies react. A lot of people tolerate it well. I wish the best for your mom. I will keep you both in my thoughts and prayers.
What is your major in college? I don't believe that you said. I am glad that you are hanging in there, I think that lightening your load is a good idea. You sure are taking a lot of classes.
You sound like you have a good attitude, I think that helps a lot when you are under a lot of stress. But it sounds like you are keeping it together. Just keep hanging on, you are stronger than you think. I can tell.
I hope that you have a great night.