We've been playing with one gallon batches. Certainly we are new at mead- but FWIW- one batch completed fermentation a couple weeks ago, and was too dry, so I added honey- it's sweetened and has not started fermentation again...I am letting it age with an airloc to make sure its stable, and then bottle.
The addition of some more honey made a huge difference in taste
The addition of some more honey made a huge difference in taste