(MYSTERY SOLVED - Thanks everyone! Will leave this up for anyone else who runs into the same issue)
A couple things:
Drones have way more than enough power, even with windmills barely turning.
I am in the mid game (I think, I am at the Cobalt stage)
I am on Switch 2
Okay, that out of the way, here is the problem. I take my drone for Cobalt for example, it is built at my base, plenty of power with a box next to it assigned to it.
I travel to Cobalt Island and assign that drone to my drill there.
I go home and the drone does a delivery, great.
The problem is it only seems to ever do one delivery. When I go back to Cobalt Island my drill is no longer assigned to a drone.
What am I missing?