Funny you mention that switch, I think that is what I have decided on for my next round. I realized as the weights got heavier, the squats were starting to wear me out and at 46 yrs old I need more time to recover. Not to mention my knees were starting to get a little sore as well, they are pretty chewed up to begin with. I had never done a full 5x5 routine before this, most times it was more 3x5 with the max weight, a full 5x5 at max weight adds a lot more strain on the body.
I should be starting this next round Saturday or Sunday, after a week off I think I will start lower than those previous maxes, say drop 20% off and go up from there.