Why doesn't my penis swell sometimes in the Ved?

[Paul80]

Hi, can you help me? I follow the VED therapy of a cylinder. I've been doing it for two months and when I do it just getting out of bed in the morning it goes very well, the penis expands completely in the VED and it looks uniform throughout the interior. However, if I change the time to do it because in the morning I couldn't do it, my penis doesn't respond inside like it does in the morning, it stays thin, it doesn't widen and only the glans lengthens and swells, and it starts to bother half way as if it had reached the maximum. At that point I freak out because my penis seems half as wide and half as long as it is when I do it in the mornings. it's like it doesn't want to swell or I don't know, it's very strange. At that moment I have to stop so as not to hurt myself. but it is a sensation that I think, how is my penis going to stay like this if it has responded perfectly in the morning? Could someone help me and tell me if this is normal or has it happened using the Ved? In short: perfect in the morning, and if I change the time when I insert my penis into the ved, it takes on the shape of a mushroom when inflated, as if it doesn't want to respond.