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

 

[RiftRaftReefing]

Maybe raise no3 slightly by adding amino acids and feeding him directly i would try this first because if he’s starving you should notice fairly instant changes back to normal within 24 hours of dosing aminos and direct feeding if that doesn’t work you might need more experienced advice