Hi and welcome from me too.
Please make your wife aware (if she is the one that does most of the cooking) that cauliflower can be cooked and mashed with a good dollop of cream cheese to replace potato with high meat content bangers or to top a cottage pie or a fish pie. I love cauliflower cheese (as described by
@Drummer with cream cheese and red Leicester and no flour) with ham or gammon and broccoli or green beans. Leeks are delicious sweated in butter as is cabbage. I can happily eat a plate of bacon and cabbage tossed in the bacon fat. I also love stir fried veg and ratatouille cooked in loads of lovely olive oil and then topped with Gruyere and baked. These are all ways of increasing your fat intake and making vegetables so much more enjoyable.
At diagnosis I too worried about all the things I could no longer eat but by introducing more fat into my diet I feel fuller and enjoy my food as much, if not more than I did before and I can feel quite spoiled (decadent even) about having cream in my coffee every morning instead of sugar and a nice chunk of cheese whenever I feel peckish and like
@Freddie1966 I have developed new tastes to replace the things I now need to avoid. I buy nuts now instead of crisps or biscuits and olives and blue cheese, which I used to hate pre diagnosis. I tried celeriac the other day for the first time and found that quite pleasant, both mashed with cream cheese (like I have my cauliflower) and roasted.
They initially assumed I was Type 2 and I learned to eat very low carb but eventually it was established that I was Type 1 and insulin was essential and whilst I could now, more or less, eat normally and inject insulin for whatever I eat, I continue to prefer to eat low carb and use minimal insulin as I feel this is a sustainable and enjoyable way of life for me now. It just takes a few months to get your head around low carb eating and what to buy and how to cook it and increasing fat intake to stabilise weight (if you don't have any to lose) and make you feel sated is a big part of it.