I would absolutely not halt your career for this. Most people do college/university as a means to get where you are now. It seems like you do not need this. Yo

I would absolutely not halt your career for this. Most people do college/university as a means to get where you are now. It seems like you do not need this. You just want to deeper learnings. No reason you can't pursue that. If you find a way to do both, then great. However you can pursue to better yourself through education that don't require you the double-cost of university fees and loss-of earnings then go for it.