https://www.youngveggie.org/recipes/kids_kitchen.html
sorry only just seen this..
the above may be helpful
Chloe has chhese and eggs every day for protein, either in sauces or on their own, obviously careful with the eggs as Larissa is younger.
I've just started introducing rice and lentils.
To be honest, I didnt worry too much about it until recently as Chloe has kept her milk intake right up but now we are progressing so much its a worry.....
so, lentils...mashed with vegetables, cheese, eggs, beans again mixed with veg....