I keep getting slow choked by some wrestlers in my BJJ class. They get the side mount, then they rest their side on my chest, while facing me, and basically headlock me from that position, forcing my head into their chest while keeping all their weight on me. These guys are strong and this seems to be a pure strength situation. I try to get underhooks from my back, then my head is isolated, and it happens, as sure as the damn tide coming in. I've been doing BJJ for 3 months, so I am a noob..no real hs wrestling experience. what should I do here? btw, I have way better gas than these gorillas, and if I can avoid these kind of pure power submissions they use on me, I usually gas em out, but this is goddamn frustrating.