I would recommend against putting it in the fuge. That is just one more stressful element your adding to an already stressed animal. By putting it in the fuge it will have to acclimate to a new light system, a longer photoperiod, AND new flow conditions. Placing the coral in one spot with the proper light and flow and letting it be is your best bet IMO
/IME. Corals take time, up to a year for some more delicate specimens, to fully acclimate to new tanks/conditions. Shuffling it around just adds more stress to the situation.
I want to move it is because it seems to be not openeing like it used to.
How long have you had it and what are your water params?