Diabetes diet.

Reg done a bit of looking things up for you. If you increase Protein and cut down carbs, you should lose weight and eventually need less insulin.
Carbs produce sugars which make you need insulin to balance. Protein increases natural insulin balance and makes sugar less absorbant. Don't eat Banana's either, high carb.
Just a thought but been looking at Jan's Harcombe book.
If you need to know what food just ask.
Have you considered getting a cross trainer at home, you can hire them rather than buy, again let me know if you need any contacts.

Got a cross trainer, Does programes of runs, Up hill down dale, Hold the bar and it takes your pulse, And recovery rate, I'm not unfit, Can run up and down stairs, All that stuff, Its just the stone the nurse said i would put on that i dont like, I mean i'm no bloater, Just dont want a tum.

If you control your insulin yourself by readings you should be able to adjust food intake.

Set amount of insulin, I dont adjust it, Just need to eat the right things, 5 a day my ase the nurse said, Too much sugar in fruit, Grapes bananas are really bad, Pairs a bit dodgy, Apple are ok, Oranges maybe, So 5 a day of what, I have one telling me one thing, And another something else, I should be 6 stone with what i get by on,