If your erections are weak stop your PE activities and all jacking off and any other sex for a week.
In that week give yourself a hot wrap every night, keep it warmed for 40 minutes to an hour. The following week continue with the hot wraps and during the day kegel. Continue abstinence. During the day find time for several sets of kegels.
When morning wood returns add light jelquing, all the while doing hot wraps at night before bed and kegeling frequently during the day (on the bus or train or in the car and other such down time); sets of 50.
Around then test your erection and see how hard it is when you get it up.
If you can get it up, there are other excerises that you can do to improve erection strength. The wet towel over the penis and flexing to lift it. I use my heat pad which weighs about 1 lb. Whatever, something soft and comfortable with a little weight to it. Three sets of twenty.
The idea is reducing fatigue and increasing natural blood flow. Heat will help with both. Taking hot baths is also good.
But in this scenario masturbation definitely affects gains and overall penile health: you penis is wiped out. Give it a holiday.
Then figure out a less compulsive jack-off schedule.
Before: I'd like to show you something I'm very proud of, but you'll have to move real close.
After: I\'d like to show you something I\'m very proud of, but you guys in the front row will have to stand back.
God gave men both a penis and a brain, but unfortunately not enough blood supply to run both at the same time. - Robin Williams (: