If you screw up a manual exchange you could get an infection. You don't want that. Learn the right way.
I know you don't want to quit work and you are in a battle with just adding dialysis to your daily life. Paul, you need to step back. I suggest you take 2 months off to just learn dialysis and get use to it without work. I know it sounds impossible but I know people who do that and I wish I had done that.
It will be Monday morning and your cycler will need something and oh but you need to get to work because you missed last Thursday and what will the boss say.......
Just go to them and say I'm taking 8 weeks off to get a handle on this whole dialysis process because it is not a piece of cake and it is life support. Then edge work back into your life. Legally they cannot fire you for a disability.