Welcome to the posting side of the forum SD, good to have you.
You will, in very little time, notice that this place is filled with wisdom on the ancient art of playing with ones dick, so taking the time to look threw it in depth will most likely produce a answer to your question.
The general mood on the forum regarding intensity is as follows: If it isn’t broken, don’t fix it.
You will also notice that the more information you post, the better the answer we will produce. With that said here are some questions:
Are you gaining?
Do you feel your penis can take more?
How are your physical indicators?
If you are still gaining you need not change a thing. If your penis is conditioned enough you can start slowly building up your routine by adding additional sets, and/or exercises. If your physical indicators are positive, then follow them until they start showing signs of negativity.
PE is subjective, for some it is easy to gain, for others hard, some move on faster, others slower. It’s a game of dedication and self awareness. No one here can tell you what is right for you, but we can give a more educated estimate if you include more information in your posts.
For you to better understand why it is advised to speak up on subjects I shall tell you that I have no idea why you need to take it easy when it comes to the so called “dirty” deed. I can’t figure out if your gains are to blame, or that it’s anal sex and you aren’t using enough lube. ;)
Welcome again, and take my advice, speak up.