Possibly your fittonia is having problems due to the amount of moving you've been doing. I know with benjamina ficus another low light plant, if you move them, their leaves will turn yellow-brown then fall off... I have a fittonia and it is currently sitting under a 75watt plantlight around 3 feet away and since placing it there it seems to be flourishing... a bulb like this can be found ay such places as home depot or rona/revy stores they cost about $5 depending on where you live, and a fixture is usally cheap... i'll let you know how the plant progresses... remember keep them in a moist area.. maybe a fish tank with rocks and a bit of water in the bottom... fish gravel works best (the white ones reflect light better, they're usually called quartz chips)if you dont have a tank or something similar.... try just using a mist bottle ***WARNING*** SOME PLANTS DONT LIKE HAVING WET LEAVES DO THIS AT OWN RISK***
I'm misting mine lightly but i'm not sure if it respond badly...seems ok so far...