Chastity and orgasm denial discussion

It’s now my fourth night wearing the cage. I was woken up by a really impressive erection—it wasn’t painful, but it is quite unsettling to wake up with your small, soft member standing tall and having your testicles pulled halfway up, like little round flags being tugged by the New Zealand rugby team practicing their Tug of War skills!! My cage has an internal locking metal bar design and is about 5.5-6cm long, so I suspect I need one that’s even shorter to limit his room for growth—otherwise, there’s a chance I’ll wake up with my testicles positioned over the front opening (photos will be available for anyone mildly interested!! - New Scientist, The Lancet, etc).. Am I alone in this, or does anyone else experience the same issue? Was your solution simply switching to a shorter cage, or perhaps using spikes to train him not to grow as much at night?:-O Thanks!