Really exciting that you've decided to change your career, and super beneficial that you have sales experience - you should definitely highlight this when you're applying for UX jobs!
Based on my experience as a Community Manager at CareerFoundry, I've never seen not having a college degree as a problem for our graduates - in fact, quite a lot of people who take our courses don't (or they have a degree in something completely unrelated). You're completely right in that having a great portfolio is one of the keys here, this along with good industry insight, and connections (having a good mentor helps with this!) go a long way. We decided to offer all of our graduates a job guarantee, because we've seen that when students are equipped with all the right learning materials, portfolio building assistance, and mentoring and community support, they're ready to secure that first UX job.
Feel free to reach out to me if you have any questions - I'm more than happy to help