Hey hon!
My suggestion would be DON'T RUSH IT.
Work on the spins and beginner lessons, free dance a whole bunch, and just get to know your style of dancing. Inversions are NOT something you can "jump" right into. In fact, you should never jump into them… and if you rush it, you might, and you will cause yourself a lot of damage.
That said, Veena also has a lot of strength conditioning exercises on here, and flexibility ones, which are super helpful.
You can also look up a few other strengthening exercises on Youtube, such as from Dirdy birdy.
I've been dancing on and off for about four years, and I'm still working to strengthen my basic invert, as well as just gaining some of the moves in the intermediate section! My strength has also been catching up recently, and I've been working hard to make sure it does… but there are so many other moves to work on that don't involve that inversion!