Insulin is a serious medicine and needs to be used with care, but it sounds like you should be using it, if only a couple units when you eat meals. Since you make enough insulin to cover basal and most of your bolus needs it shouldn't be difficult. And if you eventually end up as a full-blown T1 (hopefully years down the road if at all), you'll have useful experience managing it.
I can't imagine a doctor preventing you from having insulin if you push hard for it, especially with BG over 200 and hints of a complication like neuropathy. Your foot may well be something else (and hopefully is - pinched nerve or something?), so worth investigating further with a doctor, but it may be useful to get you started on insulin, if that is your goal.
You should friend request and email Melitta, since she has a lot of info about LADA and mis-diagnosis as T2. She can certainly help.