OK Pete first off, welcome to the family!
Second, congrats on battling back from cancer. We're going to keep that ball rolling here in the following fashion...
You've got a great start there with getting your wind back via cardio. Next step: GPP (General physical preparedness) work. This is your "bridge" back into the weight room and will provide concentric loading of the musclulature with no eccentric (lowering) which damages muscle tissue. It will also further condition your CNS and cardiovascular system for the weights.
Ideal here is sled dragging. If you're not familiar with the sled, a couple of resources for you:
https://www.flexcart.com/members/eliteft ... m=PD&pid=8
https://www.flexcart.com/members/eliteft ... D&pid=3125
To this, you can add things such as sledge hammering a rubber tire, pushing a weighted wheelbarrow up a slight incline, and even the dreaded prowler:
https://www.flexcart.com/members/eliteft ... D&pid=2294
These are pricey but well worth the 1 time purchase and will open an entire new window of training that will benefit you for years to come.
Suggest 2 to 3 sessions of sled dragging/week for 15-20 minutes at a time. Slowly build up the amount of weight you drag and/or distance-time. As you do, your work capacity will increase and the muscles will respond. Good bridge as I say back into the weight room without the risk associated with jumping back into things that Famine would pose.
Speaking of which, no Famine for you early on. I have some concerns with that so for now, just focus on GPP the next 3-4 weeks. I'll have something more specific for you once we get your work capacity back up.
Finally, with respect to The BP - do take it one week at a time. I know what happened when you quit reading.... you got overwhelmed. To look at BP in its entirety IS overwhelming. One week at a time gets it done. Trust me on that one
Sincerely hope that helps. Vets, if I've ever needed you it's right here and right now. We exist to help people in this forum and help we will...