that is depending on you're goals. what are you're goals?
if youre just trying to maintain while you're away from youre regular workout just do sets of 8-12 or something if you're only using two sets, depends how many you can do, just try to stay within maybe 24-40 in volume or something. If youre just maintaining for a week it doesnt matter all that much
oh my god no, thats not what i meant. by sets of 8-12 i mean do sets of 8-3 reps, like 3 sets of 8-12 reps. volume is set*reps (*weight lifted, but dont care about that now)