Sounds like you're already on the way to improving your situation, Estellaa. Acknowledging that your HbA1c is too high, plus having a handle on why (starting work) is a good start.
Good luck with your appointment on 16th Jan. Remember to take any records / notes etc that you have. It's probably a question of adjusting basal doses and choosing slow release carbohydrates before shifts, but your team and you can sort it out together.
I know what you mean about prefering injections (MDI) to pump - I've never had a HbA1c above 7.8%, and usually a fair bit lower, despite never having had any carb counting training, and no internet either when diagnosed in 1997. But if MDI didn't work for me and my very unpredictable lifestyle, both work shifts and leisure activities, then I would consider a pump, but doubt it could cope with the mud and water I regularly encounter when kayaking, adventure racing etc.