When you have to lift legs but your legs are pretty sore from previous workouts. Should I lower the weights because I’m not feeling 100% to prevent any possible injury ?
If you're hitting failure to soon, then I would lower the weights enough that I could complete my sets. How many days are you giving your legs to recover?
if you are a younger guy you can get away with this type of overtraining
but older yes you will increase your chances of injury no doubt about it. interviewed some of the top trainers for pro athletes in the world and yes that is true
My current program I'm trying recommends various things of either 8, 10, 12 sets to failure. With that in mind, if you're not in it that day then what the weight is that is to failure should also adjust. Not the end of the world or some kind of regression by any means. Just means you're not 100% that day