Pump help
So I’ve got two pumps that I purchased from Boston pump about a year ago. Both have seemed to lose their ability to hold the suction, despite trimming etc. They do still pump but one I stop, the air goes out. What I’m wondering is how effective would it be to just get an erection and pump to say 5-7hg and let it deplete and then repeat. Dynamic I guess is what it’s called. I can’t afford a new one right now or at least I don’t need to. Any help on a routine would be greatly appreciated.