Awesome! I have started with ramping up my steps of late after a period of illness. Some scoff at such simple progress and seemingly minor goals, not a bit of it, in fact?
Where else would you bloody start?
It didn't take a huge amount for me to generate a sense of achievement and indeed feel some benefits. (shock-horror, I even broke in to a bit of a trot a couple of times and me at 54... Sheesh!) So I say go for it! Hope to catch up with your progress here as you move forward.