What happens if you hold back ejaculation on basis?

Hello I am a young male and potentially have problem with ejaculation. Unfortunately I may have been suffering from premature ejaculation but I did not care about it pretty much until I got into a really embarrassing situation when I ejaculated really quickly during sex with my partner. Since that every time when I masturbated i tried to hold back my semen when ejaculating. I was doing that for weeks almost every day. It worked fine but couple days ago when I decided to ejaculate, just a small amount of sperm came out of me (It was also more like a water substance). It also happened next day and day after. Do I need a break from it for some time or can this be a serious issue? I am kinda scared every help is appreciated. Thanks

How do you hold back ? Do you stop masturbating before you feel too excited or like a patient before on this foum put a finger on it to prevent it coming out ?

I think the best way to prevent premature ejaculation is to masturbate 1 hour before sex and come normally , and then it will take longer to come when you have sex.