First, Take some time to really easily play with suns not just one here and there, but also continuously (! not in the whell of fortune style but with a small "pause" when the top is down, then sun again...)
Altrough the video is pretty fast,
Chris Neff videos about suns help at least to understand the moments. Once suns are masterized then have a second look at the wheel of fortune tutorial again.
Watching your video again, not sure but I can see you successfully catch with a lasso/rollercoaster right after your sun, so now try to figure out how you can get your top in the same direction but above your head... Maybe? Anyway, this trick has been a real challenge for me (and a lot of others), it's without any doubt a big step to cross...
In a more general way, as a juggler I would say: If some trick give you hard time try something else for a while then come back to that one later... (Mainly to avoid frustration or anger, but also to let your brain to make his own digestion/interpretation)
Just ideas to help you not getting stuck... Hope it halps