Alan,

Working from the 7i is a good method. Establish your 7i, then work 1 club up and 1 down. Expand as the shots get better. But always start your practice session with your go to club or clubs. I start every practice session with a PW then 8i. Just to establish a base and warm up. Then I go do what I can to work on that day. When I'm out on the course, I try to get to 125, 137 or 150.

Hope this helps get your game back on track,

GolfBald