You said it yourself...all of those factors contribute to slower T production (cutting, not sleeping much, and apparantly the saw palmetto, although i don't know much about its conversion habits)
Think of the basics..you're a male, your body wants to eat well, sleep well, and pump out that testosterone
If you're not giving it the amount of energy it wants, things will start to slow down, notably your t production
Try to get more rest each night (do what you need to do to achieve this), and perhaps try more of a cyclic diet so that you aren't always at a calorie deficit (carb cycling can do wonders)
Good luck bro, this phase of low energy, and especially when it affects your libido..well, it sucks, and not a great phase to be in.