Expanse Plot Holes

I forgot about these when writing What I'm Watching: Expanse S3, but these annoyed me to no end:

During high-G maneuvers, Prax's suit hose gets cut, and he immediately can't breathe. Amos unplugs his suit and gets up, spends 2 minutes crawling over to him and plugging it back in. Why can't Prax's suit hold 2 minutes of air? Also Amos is apparently such a badass he can hold his weight at maybe 3-10G by the fingertips. Don't arm-wrestle that dude.

Just before they rescue the kids, a scene establishes that Bobbie Draper's power armor is just about out of thruster fuel, and Holden says they have no hydrazine, they ironically don't need rocket fuel. Bobbie then spends the next 30 minutes flying up shafts and across vast expanses of open Ionian sky.

So, where'd the fuel come from? First, even an advanced Martian fusion torch spaceship probably would have hydrazine or some equivalent for maneuvering thrusters, and all the spacesuits have thrusters with kind of ridiculous amounts of thrust and range. Second, it's easy to make hydrazine with common chemicals, it's the easy part of rocket science (also drug manufacture). But there's no scene of them refueling Bobbie's armor.