I will be sure to pray for you. My mom just completed her third week of IL-2, and let me tell you, it's not easy, but honestly, if it kills those darn tumors, I believe it will be truly worth it.
You get weaker with each treatment, but my mom had a month break in-between week 2 and week 3, which really helped.
I will keep you in my prayers, and please feel free to message me if you have any specific questions about possible side-effects and such. I am in college so I have not been there for my mom's treatment, but I speak to both she and my dad every day, so I think I have a pretty good idea from that and my visits throughout the semester.
God Bless.