Definitely eat more protein!
My DH suffered and we went very low carb. We had lots of high protein snacks on hand for him. and highigher proteing melas filled him up
(We removed all crisps, biscuits, popcorn, bread etc from the house)
Meals:
We would up the veg to replace the potatoes/pasta etc. So I'd make a chicken casserole say, and replace any potatoes/dumplings with broccoli and cauliflower for example.
We would have fajitas, but use lettuce as a wrap instead of flour tortillas.
things like chilli and spag bol would be served with things like sweetcorn or peas or cauliflower 'rice'
PACKED LUNCHES:
He would have either leftovers, or a 'giant' salad - he loves his salad and will take a big tub of it to eat, with some sort of protein in it (salmon, tuna, cheese, eggs, ham etc)
a small tub of no salt nuts
a couple of boiled eggs
cheese and ham
Cold omelette
He snacks on:
Boiled eggs
pre-cut/portioned cubes of cheese
Salad sticks (carrots, celery, peppers etc) and 'pure' peanut butter.
cold meats (sausages, ham, chicken etc)
Sweet treats:
We have found that things like sugar free jellies or skyr scratches that itch :)
He found himself to be fuller for longer and lost weight really easily without feeling hungry.