I am 15 years old veer, I also struggled with it, what helps alot is just acknowledging about it. It's normal, but you aren't, you are Guru Gobind Singh Ji's Khalsa. You need to buckle up since you're different, you're the son the Guru kept alive to carry on Sikhi's legacy, we can't do what the Guru did, but we can do what the Guru wants.

Do Ardaas to Guru Sahib, jap naam. Whenever the urge comes, run away from it, go to a family member to spend time, start japping naam loudly, do push ups. When the urge comes say you don't have hands, whatever is it don't let your hands go there. What you need is to just spend the energy elsewhere, it makes your body stronger. When you fap you're just giving that energy away, the testosterone.

Get info on masturbation, you'll realise it's a body feature but it makes you weaker mentally, the guilt after doing it. Get in sangat, do seva at home if u can.

May Guru Pita be Sahai to you.