ambien is not really anxiolytic, it's mostly just hypnotic and hydromorphone risks affecting how you look and with a photoshoot, small variants in pupil size or skin pallor may be more consequential.
Your best bet is to go to a doctor, explain the problem and get something like a beta blocker which will stop the physiological manifestations of anxiety and with that, it's easier to give yourself the requisite confidence. This has worked wonders for me quickly with public speaking and now I would have no problem speaking in front of a few hundred or a few thousand people with confidence and minor jitters.