Hi Chalky, I am stage 4. I walk about 4 miles each day. One miles at a time, first walk early morning, then midday and make up the rest just pottering about. First half mile is easy but after that I can struggle and I have a few breathers. Just have to make sure you keep it up ! Don’t seem to lose any weight as I do retain fluid even though I am on a water tablet and restricted water intake.
Indeed, any walking is good, but I wouldn’t worry about weight so much, it’s just good that you’re getting out daily and decent amounts
If you can, from a mental side of things, if you can manage 2 miles or 40 minute, it starts firing off positive endorphins etc and I find it noticeably different to a 20 minute walk