I think both (C. largiceps & Cruentatus) should have a small alleviated form of hibernate - similar to Messor barbarus for example.
So try to reduce the Temperatur for 4-6 weeks during ~ december to february to 15 degress +/-.
They will not stop completely the activity but all is reduced.
Maybe you know or can find out from which area your colonies came from and take a look on a climate diagram.
Your Food seems to be good. You can try to alternate it a bit. For example a bit pure honey, sugar water, maple syrup and for Proteine u can try all Kind of fly, Spiders or other insects you can find.
My favourite is Schokoschaben / Shelfordella lateralis cause they have good size and a soft armor and for small colonys I prefer fruit flys (the not flying Kind from zoo market).