I always use this rule, Pain is bad, there is nothing wrong with a light grip and for me it is key.
If I am 50 percent erect I use a moderate grip.
If I am 80-100% erect I use a very light grip.
If I am 10-25 percent grip I use a tight grip.
Erection levels and grip pressure are overlooked a lot of the time, I have tried to master this with my routine, when my erection level changes then so does my grip strength.
This makes for a very good workout.
How does this answer your question?
It’s telling you to ease up on the grip, Id wait one week with no PE and 25 min warm baths daily.
Then start noob routine over with 10 min bath warm ups before, this relaxes all the tissue on the shaft, and if you go too hard by mistake, chances are the warm up will have helped the tissue and veins relax so it might not be affected so much.
Most important with my routine, is always have a 5 min hot bath after the routine is complete. ‘This also builds a relaxing atmos for the unit and minimises injury’s.
This is only my opinion, but I have had success and injury so I think it’s valuable information.
Good luck