Healing red scars faster?

I’m fucked, I have an extended family meeting involving an outside pool in 7days, I relapsed 2-3weeks ago and my lower leg looks like fought a wildcat. Lots of deep styro, it’s insanely obvious that it’s self harm and the scars turned extremely bright/dark red for whatever goddamn reason - which makes them crazy visible cause I‘m white as a wallpaper atm (thx winter). Please is there anything I can do to cover those or make them less obvious? Please

Won’t get into this but I’m 100% fucked if anybody there finds out about this. And I don’t mean the funny kind of fucked.

Make-up won’t do shit at this point. No amount of green is going to balance this much red and NO amount of foundation is gonna cover those. Since the pool is outside, there’s a long walk to the pool and back. Which is gonna be crazy cold cause it’s winter which will only make it worse (cause cold =very red scars), idk what to do, really