99% of feeding issue are husbandry related here is what I will suggest

1/ SEPERATE them there is no benefit for them to be housed together, it can lead to stress, stress leads to feeding issues.
2/ Offer the appropriate size enclosure for each 6 to 12 quarts plastic tub (5 gallons tank at the most with 3 side covered up if you go with glass tank) with aspen for bedding, plastic flower pot saucer for hides (1 or 2 depending on the size of the tub), hot side temp of 86/88.
3/ NO Handling until the eat with consistency
4/ Feed in the enclosure, feeding outside can cause enough stress to lead to refusal
5/ Offer the same prey type that was offered previously for 3 to 5 feeding before attempting to switch.

Key word is SECURITY not in a few weeks but starting NOW, the sooner you provide PROPER husbandry the faster you get your animals on track.