It is touching to hear your concerns for them, and they obviously can show their love and concern to you. You know, you might just share your gratitude with them along with your concern about overwhelming them. Maybe you already have? My husband and I did something a bit unusual when I was in the throes a diagnosis for a rare breast cancer. We drew up a little contract, saying what the other person could depend on us for. For example, he'd drive me appointments. That way I knew he felt ok about it and I didn't worry each time. Treatment was emotionally much easier than the uncertainty and confusion of the start. Wishing you all the best--so great you have this kind of support.