I am glad they are eating their feed finally and that it’s working but I would honestly cut out the scratch completely or at least cut that ratio wayyyy back as it waters down the nutrients in the feed. Just wetting the feed is a treat in and of itself for most birds.

if not, you could add a teeny bit of scratch to trick them into thinking it’s a treat.

but not half and half. Treats should make up no more than 10% of their diet and some don’t feed them at all. BUT. I understand you are still transitioning to pellets so it may help and be okay for a bit.