Here I thought Rene was right (tell me if you don't want kibbitzers on your log). Ripp talks about moving the increases down to very small amounts (a pound or two in some cases) but always increasing. I think you may defeat the purpose if you are just lifting the same amount each week. It also means you need bigger jumps on a weekly basis which will just increase the chance of failing.
I'd suggest giving a more incremental approach a try. It's the Milo and the calf story: he didn't find a newer, heavier calf each week, he just carried the calf each day as it gained weight pound by pound.