@Ned01 sorry I didn’t properly answer your question - no I didn’t feel tired all the time.
My energy levels were good in the morning but catching up or meals with friends after 5:30 pm (with the exception of NY Eve when I stayed out until 8:30 pm) weren’t possible for me. I had the problem of over estimating what I could fit in without coming down in a heap because I had been too ambitious!
You might be surprised and be able to get back into your garden.
I was well enough to commit to 2 mornings a week exercise program and an online course of study whilst doing the radiation therapy. I would take a rest about 2 pm in the afternoon and that would be enough.