Herbs indoors losing vigor
I moved my favorite herbs indoors for the winter about a month ago and already they are looking awful. They were in pots outdoors and I didn't transplant before bringing them in. I have oregano in one pot, basil/parsley in another pot, lavender/sage/oregano in another pot, and sage/rosemary in the last pot. My house is already dry from running the heat, so they seem constantly bone dry. I water every other day and feed rarely. They're under a grow light that runs from 6am to 8pm. Would they benefit from being tented to add humidity to their environment? I have a small indoor greenhouse I could set up but I'm not sure if that's the answer.
New England, USA
Metacomet soil with hints of Woodbridge and Pillsbury