I would take him at his word in that he has nothing to offer you, that he is concerned with his own recovery, and that he can only meet up with you when he is feeling better. From what he seems to be saying there isn’t much here to bank on. He isn’t available to you — and is only promising to meet up somewhere down the road. This isn’t a strong hook to hang your hopes on.
Take the best parts of your relationship and let yourself look for someone who can be more available for your needs. You were drawn to your boyfriend’s potential, but his reality is something different. I’d look for someone who has more of what you need to offer.
This doesn’t mean you can’t be friends, but don’t expect more from what he already has told you he can give.