I think this is a really interesting question for a lot of us to grapple with, and I've seen a few of the ladies here come to a lot of very interesting conclusions. Mostly, I've noticed the answer is personal, in that we can't really provide you a proper answer on how to get your groove back, but there are a lot of suggestions to be made in how other people have done so!
My first thought is toward how you're going at your training. Are you seeing it as just trick training, where previously you had been dancing and not worrying too much about tricks? Or vice-versa? Our intentions when training seem to change from studio to home, and I've noticed it being a source of contention with ourselves- basically, what was it about pole dancing that got you interested, and is it still something that keeps you interested now? Are you filling that need with something else (especially considering you do a lot of other things!), and now have to find another place for Pole to fit?
Next, is some amount of structure for your home workouts. Being completely unstructured is good for very few people, and not many progress going at it in that way. Things like having a pole journal can really help, as you can write down goals, what works and what doesn't, and tailor your workout easily into something that you really enjoy. That isn't to say that you need to be totally structured, either- if you suddenly find some inspiration in a song, you can dance to it and really get into it, unlike in the classroom where you are listening to your instructor.
Lastly, make sure that you're not burning out. It happens to the best of us, and sometimes we simply just don't notice it happening. Physical burnout is often understood to be "your body just giving up," but you also have to think about mental burnout as well. Dancing, and problem solving (like, when you're trying to figure out a move) can be taxing on your head as well as your body.
Also, if it is a particular move or group of moves that you're having issues with (like, you've hit a physical plateau and don't feel that you're able to progress further) you can change your focus. Instead of learning new tricks, see if you can work on stringing tricks you already know into something that you like, or making them flow better. This will both increase your strength, and give you a stronger understanding of pole dancing, as we're constantly learning about the art.
And, of course, be gentle with yourself. You're not a machine, and sometimes you just need to go at it in a gentler way.
