You should treat PCT like you would treat a cut.
You will have pretty much no testosterone for a while, so you'll want to work with heavy weights. If you go too heavy on cycle, you won't be able to maintain that strength come PCT. AAS increases strength considerably beyond what it would be if you weren't on AAS, so obviously when you come off, there is going to be a drop in strength.
Yeah, HST uses submax weights after deconditioning, but there is a difference. When you do this with HST, you have normal (probably) testosterone. During PCT, you do not. If I were in PCT, cutting back the load I am using would be the last resort. First, I would cut volume back. I would only cut back the load if I really, really had to.