sea stars can easily adapt to 80-82 degree temps as long as the increase is gradual IME. My Brittle star has no trouble with my 80 degree temp but I know Linckia Sea Stars
are a lot more temperamental to ph/sg
/temp changes then most stars.
with a long drip acclimation and steady temp increase (2-3 hours) you could do it.
I assume you don't have any other Sea Stars now in the 92.
Edit: I only feed my brittle once every other week and it's a small raw shrimp piece about the size of my fingernail. It will scavenge the lr
/sand for food also and goes after frozen leftovers that fish miss.