The best answer is to see a physical therapist.
My answer is that it depends on how you feel, honestly. If you feel good doing what you are doing, keep doing it and don't let anyone change that. As cycling doesn't stress the knee joint or its associated muscles throughout their full range of motion, I would incorporate stretches and light full ROM exercises to compliment your cycling. If you feel like you are making it worse, stop. If you don't feel like you are making it worse, there is a huge body of evidence supporting the argument that you are only making it better, faster.
Being ready to incorporate more intensity requires that you and your patellar tendon feel ready to do so - the challenge is to do so gradually. This is where most people **** up, and where a PT can be of much help. Too much too soon and you will be back at square one. A graded re-entry into your previous training is always best given by working with someone who specializes in that sort of thing.