I need to exercise and lose weight

I lost five pounds after my surgery. But I’m still at 220 and I should be like no more than 145-150 pounds. Once I was 135-140 lbs I used to be so slender. I need to make an effort to excercise whether it’s getting back into yoga, Pilates, dancing, ballet barre again, or just walking almost every day though it’s brutally cold out side. Although I wear thermals and so many layers I don’t feel the cold so much. I wonder how much energy I will have when I start radiation therapy again next week.i hope I don’t get really tired and nauseous again. But I need some form of moderate slow paced exercise to keep healthy and I would be happy if I lost a pound per week. Last couple of weeks I have had more energy since I removed my cancerous gonads and healed welll. Today I even drew Petra Jordan, camels, and Bedouin woman in one scene. I also drew princess jasmine and Aladdin on their magic carpet ride. I’m. Obsessed with wicked, wicked for good and Aladdin among other movies.