Just to update everyone, I did a couple of Ultrasound sessions. The results were very motivational, since it seems like some sort of "muscle memory" plays a role here. I started at 23cm, after the first session reached 23.5cm. The next day, went from 23.5 to 23.9. However, disaster strike. My beloved blister came back. Big time. This time, there was a difference though. I discovered exactly the cause of the blister.
All this time that same big blister has been coming up in the same spot. I discovered this time, during that second session, that specific spot becomes weak due to the twist of the penis to rest over the leg "upside down" in order to hit the septum. This second time, I put even more stress on it when I turned my body away from the weight, making myself more "sideways" and kinda applying a fulcrum on the penis with my leg. That put a tremendous stress on that specific spot of the glans. It seems like the whole vacuum was pulling from that specific spot.
It has been recovered since then, I will try another session probably tomorrow while applying some sort of protection in that spot and now trying to reduce the stress on that specific area. Sitting right now at 23.5cm.
Period 1: 06/08/2020 BPFSL: 22cm (8.66") BPEL: 22cm (8.66") EG: 15.8cm (6.25") => 09/07/2020 BPFSL: 23.9cm (9.40")
Period 2: 05/01/2021 BPFSL: 24cm (9.44") BPEL: 22cm (8.66") EG: 15.8cm (6.25") => 07/24/2021 BPFSL: 25.4cm (10.00") BPEL: 23.5cm (9.25")
Goal: 1 Foot x 7.5 Inches (30.48cm x 19.05cm) NBPEL