It is possible to successfully feed off one side Stevie. I'm sure I've heard of it before. Whether it's possible for you or not I don't know but don't give up on it just yet, if it's important to you.
Another option is to use donated milk if that is something that you are open to.

If it even comes to that. Maybe have a chat to an LC before you have bub and get a plan in place to give yourselves the best chance possible. At least then, if it doesn't work out, you can say, "I did everything I could and it didn't work" and hopefully feel a bit more confident in yourself and having to supplement.