Hi Carmina,
I'm very sorry to hear of your illness! I think it's wonderful that you want to keep learning with the time you have left! I'm not sure how I would handle that time. But one thing I have found is that playing guitar is so extremely stress relieving! It helped me through some very stressful times recently. I find just strumming the guitar, even just randomly to be very peaceful! I hope you learn as much as you want, but thoroughly enjoy the process:)