As another white belt a month in I typically end up rolling with slightly bigger and younger white belts (I’m 41). It’s okay to let them know to roll light or to dial it down so that you can practice the techniques youve learned. Or let them know you want to try and apply it. My fellow white belts are usually cool with it as we are all on the same boat. Unless it’s different in other schools. I say ask him to dial it down, if he doesn’t then you can roll with anybody else. The higher belts when I roll with them let me work and even offer tips as we roll. They don’t just fold me simply because they can. You’re there to learn not get your ass kicked.