propanalol

Hey, wondering if anyone can help, I was at my gp today regarding taking beta blockers through my pregnancy, she said it would be best if I could come off them but it wouldn't cause any harm to the baby. I have been on them for almost 2 years for anxiety. She told me just to stop them, but I know from personal experience that is not right (partner suddenly stopped them and was unwell), and it also tells you on the box do not stop taking these, I read online its best to gradually reduce the dose. I feel like I would be ok without them and I rather would for the pregnancy but I'm now anxious as how to do it, does anyone have any experience with this? Also would it be safe for me to take folic acid whilst on these?