My CSB mouth is open

[CoralsComeInMoreColors]

I got a csb about 8 months ago, and it was doing really fine until I took another anemone out of the tank as it was splitting and growing too rapidly, I noticed my csb getting ticked off and ran carbon+ water changes. It seemed to be doing fine and then I started dosing amino acids (new to sps and heard aminos help a ton) and then started to see my csb deflate and in a weird shape, this morning I saw my CSB with its mouth open, and I really don’t want this to die as it’s my favorite piece in my tank, any advice?
Tank parameters: 8.6 dkh
1350 mg
350 ca
0.4 phosphate
2 nitrate

 

[CoralsComeInMoreColors]

I forgot to mention that I did have a swing in nitrates once I started feeding amino acids, went from 30/40 down to 2 in a couple of days