Yeah, that's probably it
Latuda can be nasty to get off of. How are you weaning yourself off it? Are you going down by 20 mg each time? Or did you go from 120 right to 60?
Edit: When I went from 40 to 0 is when I got severely depressed. If you're not going down by 20, it might be a problem? I can't say how long it'll take for your symptoms to subside, though. I've always jumped back on Latuda when I couldn't handle the depression.
I went cold turkey off it again for the 3rd time (I'm currently not on it anymore), but I became manic from Adderall at the same time, so I think the mania somehow offset the depression. lol.