BTM is going to be ten times higher in 2 months and this (and all other bitmain machines) will be profitable again.
Now - unplug your B3s if you care about this shitty amount of electricity and wait for its moment.
It wont be because GPUs will go and do it more efficiently, meaning the B3 wont be useful regardless.
The B3 will only be profitable if the GPU are alot more profitable.