That's basically edging, riding the wave.
You can do that for several times but I would see it healthy to release after a session. You don't want to "shoot it back" that much, that can cause issues. But it's alright to edge and "balloon" from time to time, some have found that to be great for gains.
What I am doing is that I am reaching to the point of no return and instead of letting the semen out, I am squeezing my penis hard so that I won't ejaculate
So, Am I supposed to squeeze it before i cum?If you cum and squeeze your dick hard at the same time you may cause damage.
Duly noted.Yes, squeeze way before, when you're starting to come you've gone past your point of no return.
And my first reply stands true, after some this squeezing technique, do release, you don't want the stuff going back inside of you, it's not good for the tubing / plumbing. When you do a good release there shouldn't be any issues.
Considering if you were with someone else, squeezing when you're already cumming defeats the purpose in a certain way, pause before you hit that Point Of No Return mark well in advance.
Most guys count from 1-10, remember to breath and be in sync with your body.