Actually the good news is that you don't need to cut down on the dairy if you eat lchf! See
www.dietdoctor.com
You might even be able to lower your metformin (though always in consultation with your doc!)
My brekkie on this diet is bacon or sausage with eggs (fried or poached)
Lunch is nibbles (peanuts, pieces of cheese, olives, cherry tomatoes, avocado, cocktail sausages, salami)
Snack full fat Greek yoghurt mixed with berries or cheese or nuts
Dinner salmon with full fat sauce and loads of green veggies or salad or chicken cooked in cream. The list is endless!
I rarely eat cake though I will have a piece tomorrow and tonight I'm going to have dessert as we are going out for a birthday meal. But generally I have cake once a month. I have a low carb dessert once or twice a week, a few glasses of wine at the weekends and I've lost 3 stone 10 lbs since the end of January.