To be honest, I'm no fan of the no masturbation club, if it doesn't interfere with your life, or hold you back from anything, then in moderation its a no problem, provided that you don't watch porn while you masturbate.
That's as long as you don't have a partner, in which case, I'd encourage you to save it for them, sex will be worth it, meanwhile don't guilt yourself, BTW, Edging is a better alternative to masturbation, and compliments your PE regimen very well.
Again, if its not addictive, and in moderation, why not.
https://www.pegym.com/forums/beginners-forum/2802-edging-101-a.html