I've never made a Bromaz solution but from what I've read it's just a bit more stubborn than other benzos. Propylene glycol and everyclear both work you'll just need to do a lot of heating and stiring
Bromazolam just doesn't like liquids, especially not propylene glycol.
If you want to create something like a snow globe, (shaking and the flakes are falling), it's perfect though.
I promise you it's possible. When I was using it regularly I usually went with PG solutions and never had a problem with it falling out of solution. I'll look around and double check that there wasn't an extra step or anything
So yeah people make it with just heat and stirring/shaking. I've seen several mention blasting it in the microwave for like 5 seconds at a time and others mention a hot water bath. You'll also want to make sure you're not oversaturating the solution