5/3/1 Upper Body Only

Hey guys

I have a knee injury that prevents me from doing squats/deadlifts. I’m doing the upper body portion of 5/3/1 right now and while I’m getting good gains from it (25lbs on my bench after one cycle); only training twice a week is really getting to me.

Would doubling my weekly volume to 4 days a week (2 push, 2 pull) be a good idea or should I stick with the twice a week training as long as I’m gaining?

ask this on the 531 pt2 thread in the strength section