Advice on shift work

Switching between the shifts shouldn't be an issue, you just have to adjust your meal timings and be aware that you'll have active insulin on board if doing a manual job.

It's a good few years since I've done shift-work but it was never a problem, if your basal dose is correct you can sleep through meal-times (for example sleep through lunch when coming off nights and get a good days sleep).

Just be sure to test regularly until your settled into a routine as you may have to make some adjustments to your insulin doses, also carry plenty of snacks as they do come in handy where there's no food facilities available. Good luck.