Hey Jenny!
Generally, to see improvement on a consistent basis, you should engage in strength training at least once a week, and at very most, 5 times a week. Most people find the “sweet spot” to be at about 3 times a week, however! This allows you to have a practice that happens often enough to push your body, but also rest days enough that you can recover from your workouts.
So, if you’re doing Pole once a week in a studio, for example, you could go to the gym or do your own exercises at home two times a week aside from that.
Of course, this also depends on how you react to the stresses of training, and what you feel you can handle in your schedule. If you can only do pole once a week, that’s okay! And, if you have lots of time, and find that four or five times a week is best for you, then that’s okay, too! Just remember that consistency is key, and that if you can’t train very often, be gentle. Forcing yourself to train “harder” or with more intensity isn’t going to do you any favours, especially if you’re trying to “make up for a lack of training time.” Your body will thank you for being gentle!