3 week transition for lifting

I'm almost done with my transition lifting. I always want to rush it but know that is a bad bad idea. I didn't even experience the shocking soreness that usually accompanies getting back to lifting this time because I eased into it.

But my left knee has been tender. I've been icing it and taking some advil. I know that it is the lifting. My muscles can easily handle more weight especially on the leg press, but I'm slowly and deliberately increasing sets,reps and weight over this 3 week period. And have been taking 2 days off between some days to let it rest.