It even had some new growth in the past month, but all look like they are thirsty.

one more picture. the plant is in 'Gritty Mix'

Is the soil moist or dry?

Yes..They love water and you can't ever let them dry to a wilt because it can take a while from them to recover..

It's pretty much hard to over water in your mix..If it's not under watered then the next thing to look for is spider mites only to be seen with a magnifying glass..They can suck the moisture right out of all the leaves just as you see..

Been there done that..I have about 3 of the same plant and one got so big, I left it for old man winter..Still feeling bad about this one:-*(

Mike

I brought it into the shower and gave it a good drink, also, set the room temp warmer then usual, last night suppose to be almost record low here. And here it is, much better. I think I am too paranoid about wet and cold combination, I kept it in a room not too warm. But apparent , I did not water it enough.
Thanks purple and mike. I think it is on its way to recovery.
Greendale

Yes..I am so glad you figured it out! Especially in your mix, it's ok to water more often...Brunfelsia can take up to 55 degrees on a regular basis with no death..

The only thing that will happen if kept at cool temps is less than ideal foliage...Your mix is great by the way. Great job!

Don't be afraid to wash the leaves once in a while..They love it!

MIke

Looks so much better. TY for the update! Now that you've seen it wilt, you should be recognize if it starts to do that again. As long as the soil is dry when there is wilt, all is good, just needs a drink. Reading a thing & seeing it are totally different, huh?