Brain in dire need of help

[GreyHawk1968]

I acquired this little brain from a couple days ago and I'm hoping it's not too late for it. I fed it the night I got it home and it did take the food I offered which I think is a good sign. It has been in a system with no supplementation whatsoever. And the lighting was horrible. I have it in a dim corner of my tank to avoid it bleaching hoping to move it to a brighter spot as time goes.
Any suggestions?
IT's in my 75 with my other 3 brains : 2 Tracs and a Favia and they are doing well.

Got this one when it was about the size of a silver dollar.
Any suggestions would be greatly appreciated. I Don't want to lose this little one . It is a pretty shade of pink (saw it when it was doing well).

 

[Gimplar]

looks like you're doing everything you could do for it. And the fact that you already have your tank set up to cater brains, i'm sure it has the best chances for survival. I agree with keeping it under dim lighting to avoid bleaching. I would possibly add suppliments to the food you're feeding it to help with regeneration. unfortunetly i dont know what to add to foods to help corals, but i add garlic and selcon to my food for my fish and i just use the same food to feed my corals. Also maybe try feeding it enriched brine/mysis?