slight discomfort (1/10 pain) during training that turns into 3-4/10 pain after training. What should I do?

Hi! I'm back here to ask a question. I'm in my second week of strengthening, and while doing the Bulgarian split squat, I accidentally used 2 kg more than planned, anticipating the load progression. After that, I noticed discomfort after my training sessions (which I hadn't experienced before). This is the first time I've encountered this discomfort during the rehabilitation protocol (I'll leave it below for you to see). What should I do? Reduce my weekly training volume? Maintain the same training volume and reduce the load?

One thing I did was remove the isometric leg extension and stick with what's included in the protocol.