If I were you I'd be trying to get a replacement hydrometer for better management of next batch (you know there will be a next batch!!!) and some yeast nutrients and yeast energizer. Fermaid K energizer is the recommended one because the most is known about what amounts of good stuff it contains, but I've done well enough with the stuff I've got.
If you want to "feed" your yeasties, I'd recommend microwaving or boiling up some bread yeast (several teaspoons in 1/2 cup of water, boil away half the water), it's one of the safer additions you can make if you don't know what stage your fermentation is at, because anything your yeast can't use at this point will just settle out..
"The main ingredient needed is 'time' followed closely by 'patience'." - The Bishop 2013
"Good grief! If someone wanted to murder you, all they would have to do is ship you a 55 gallon barrel of honey and watch you document working yourself to death!" - Vance G
"When you consider that laziness and procrastination are the fundamentals of great mead, it is a miracle that the mazer cup happens." Medsen Fey, 2014
"Sure it can be done. I've never heard of it, but I do things I've never heard if all the time. That is the beauty of being a brewer!" - Loveofrose, 2014