I'd write more inspiring words, but I think everyone before me has it covered. I'm also a trans male, so I don't believe I could offer advice on ways to temporarily ease your dysphoria.
As someone who self harms as well, I can understand how difficult it is to stop. In the meantime, have you tried using neosporin for treating scars and letting the cuts heal faster? That is, if you're motivated to get rid of the scars. Sometimes I'm not, other times I'm grossed out by them. Perhaps your motivation could be that, once transitioning, you'll be able to enjoy your body even more without scars left from self harming.
As far as distractions from self harm... That depends on individual. You could work it out with your therapist, like you said. Or did you mean that you're going to finally get one? If so, I hope it goes well and that you could safely come out to them at some point, as well as find distractions. For now, keep looking up various distractions and other ways to cope and figure out what works best for you.
I wish you luck. Keep us updated if you can.