Hi Charlie!
First off, welcome, from a fellow shortie
I have a wacky work schedule myself (it involves night shifts), and so I really have to think ahead when it comes to eating, sleeping, and exercising.
What works for me is setting aside time on my day off to food shop, and then cook my food for the week. This is often a simple stir fry or chili. Then I portion it out and stick it in the fridge. I supplement this with veggies, fruit, yogurt, cottage cheese-- all things that can either be grab & go or be portioned out into smaller containers. As for the exercise, I love group fitness classes and I go to them at my gym because otherwise I feel like I am wasting the $ I am spending at the gym if I'm not attending. I also thrive and do much better in a group setting.
When it comes to sleeping, you have to figure out a schedule that works for you, and stick to it. This means a repeating pattern-- same bedtime, same wake up time, etc. For me, it's a little different, but the concept is the same-- making an effort to carve out the time for self care.
Hope this helps!