MOnica, your diet sounds excellent. It's similar to the one I grew up with. We had the classic small amount of roast meat with lots of veg for Sunday lunch (and a delicious pudding, apple/rhubarb/blackberry crumble) then Monday small amounts of the roast in a large stew full of whatever veg was in season, by Tuesday the meat was being transformed into a potato onion and meat pie plus cabbage or whatever came in from the garden if we had a veg garden or the market if we didn't
In the 1970's when my first child was born and money was very tight, I followed a similar line. Because we were young hippies, we supplemented this with brown rice and tomato sauces of various kinds, with beans/pulses added for protein.
I'm still a fan of what a friend whose father was a chef referred to as 'peasant food'. I have a veggie chilli cooking at the moment, we'll have some brown rice and brown bread for those who are greedy (whoops, mean hungry) or who don't like rice.
Like MOnica, we've always eaten 4 or so non meat meals a week. It was a huge relief when the children left home, to know they could make something tasty out of left overs/or fridge bottoms teas.