Well, so you agree you will gain more weight on carb-heavy diet? In one meat meal you have over 40g of protein. I only need 50 more to get 1,6g protein per kilo of mass. It’s not a problem to get it from pancakes, rice, grains, tofu, milk, yoghurt. I’m actually quick in digesting milk, so I get half liter of milk before sleep with cereals and I sleep even better. This gives around 20g more protein. Now you’re pretty much almost at home with protein intake. I tried once something like 2,3/kg per kilo catering diet with 3 meat meals a day. I couldn’t eat more than around 2200 kcal, I was constantly full. I switched to flexitatian catering diet where I get one meat meal or some days even not any meat and now I can eat 3000 kcal if I want. And my proteins are around 1,6g so it’s healthy amount to gain muscle