Bluetooth is a risky comms medium at the best of times.
When I Need to use it in my studio setup I suspend an external Bluetooth dongle on the end of an USB extension cable high above my operating area.
Sod’s Law dictates that Bluetooth will fail just as you do your best take.
If at all possible go hard wired.
Waves along Copper conductors are much more reliable than waves through air, and mammalian bodies, and wood and metal obstacles. 
