Great observation. I believe I see the patterns. I'll explain and I'll offer something to change with.
When you use SSJ to induce positive pressure, your penis already maxed out the amount of blood volume in the constraint corpus cavernosa. Think of a room that already have strong walls, and you need to break the walls down little by little. When you use the C-jelqs, you're forcing blood through the existing blood vessels, and C-jelqs is practiced to induce larger blood volume rush. It's like making your current garden hose to become larger using high pressure than the garden hose can support the volume of water flow. By forcing the blood volume in a quick push each and every stroke, you're forcing a higher flow pressure to expand and contract that your body likes. Think about how when you're hot and horny, and your blood pressure forces a large amount of blood to make your penis as a hard as it can to make the partner feels ecstatic with a larger feeling to receive your semen. By doing the C-jelqs, follows by the SSJ in balance, you're causing that expansion phenomenon through larger blood vessel blood flow, and positive expansion rate through SSJ to force the blood chamber temporarily.
If C-jelqs work well, let's play with blood pressure manipulation. I wish more brothers report their observation like you during their routines. It's a lot easier to provide routine management.
If you're using 8 minutes of the C-jelqs and SSJ, bump it to 9 minutes total. Let's do C-jelqs for 2 minutes, and for 1 minute, force the C-jelqs into the SSJ. The 2 minutes allows the blood to accumulate, and the 1 minute of SSJ causes temporary forced expansion. Repeat the pattern for 3 C-jelqs and SSJ.
So, the routine is something like at 3 x 9 x 3 sets for pumping for now:
- 3 minutes pumping in a dynamic pressure to expand your penis.
- 2 minutes C-jelqs to build up pressure and 1 minute SSJ to force further expansion. Repeat 3 times total.
- Repeat with the pumping set for 3 sets total.
Observe how you're doing between 3 sets vs 4 sets vs 5 sets. This will gauge how well your penis responds to low amount of sets vs high amount of stressed sets. As you go past the 3rd set, your penis will reach fatigue. Some penises respond very well for stresses, and some not so much. We'll gauge it at this moment in time.