Hi and Welcome. Hopefully you’ll be able to practice more in the future.
As for stength there are quite a few options. Veena has great stength training tips on this site and her youtube account (not sure if it is her that covers "pole-ups" but those are awesome. If you are at all interesting in Yoga or pilates, that is a great way to build strength and flexibility without a pole. Or when you can practice more just practicing your spins lots, on both sides, and working up to harder spins is a good way too.