My advice is to bump the amount of jelqs by 15-25 every 2 or 3 weeks for now, and start reading about other exercises such as squeezes. After reading a TON of posts and you have an understanding of the motion try doing 5 on your next PE session, then add 5 every 2-3 weeks instead of the jelqs for a while. If you notice any negative PI’s bring it back a handful of jelqs or squeezes, or don’t increase it.
I’d suggest a similar sort of progression based idea for stretching, but you would be adding to the total time spent stretching (symmetrically) rather than times you stretch.
Small increases every 2-3 weeks is a good way to slowly increase the intensity overtime without overdoing it. For me this provided great gains while getting a bit better conditioned to handle more advanced stuff.
I can not stress enough, READ A TON. Sometimes one person can not describe how something feels when it feels right, but after reading enough experiences that different people have of “the right” feeling you can get a much better idea of what it should be. When something catches your eye make sure to at least skim the whole thread to see if a question you want to ask has been answered somewhere within. That being said, do not hesitate to ask questions (do use the search bar first though).