New MTS not moving much?

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I managed to slowly acclimate a MTS from FW to about 1.010-1.011 over the last 2 weeks, it lived in 1.010 salinity for the entire second week. I kept in a jar with some macro but no substrate. It showed no problems. It ate bits of the dead macro and even gave birth to two baby snails. But since I moved it to the shrimp setup, it hasn't moved much except for burying itself. I did find some poop around it so that should be a good sign. Is it normal for them to be this inactive during the day or does it have something to do with the water?

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Found it on top of some macroalgae at 4 AM. Think it should be ok for now.