Less of pure advice and more of a rant.
Back in AUgust I think, I got an orthotic and things mostly did well, but like a month ago I started getting massive pains in my lower back/hip. Grinded out through a bunch of busy weekends in the restaurant via ibuprofen, Salonpas, heat, and icing. Finally got into PT last week and they basically say I probably have a nerve hooked over a bone in my hip and now I'm on a stretching and specific hip exercises for mainly lateral strength improvement. ANyway all that context aside, I am cleared to go back to the gym just told if anything hurts don't do it. With my shenanigans of my hip I'm thinking of mainly sticking to machines until I know what does and doesn't trigger pain. So my thoughts are 3 days a week. Every day starting with 5 minutes on the exercise and finishing with 15-30 minutes depending on hip discomfort.
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Day 1 legs and arms - Thinking 4x10 leg curls and leg extensions, couple with bicep and tricep curls, finish with dumbell overhead presses.
Day 2, Chest, Back and Core - Bench, chest press, high rows, low rows, and finish with pushups and situps.
Day 3, Rotate around week to week, Probably will try and always do leg press to test that. But mainly repeat exercises from earlier.