I know exactly what you mean! I haven't even asked about FET while bfing or anything, but the thought of 'cutting him off' prematurely just to try and get pg seems so selfish. And I do really enjoy bfing, so there's a part of me that doesn't want to stop either. That said, I think your little boy is a lot closer to weaning than mine (with his 8-10 feeds per day!).
If I'm entirely honest with myself I have to admit that I'm holding on to an irrational hope that I might just get pregnant by accident. It would be so nice if it could just happen like that. Deep down I know it's highly unlikely, but I still cling to this as a way to avoid the issue of weaning and returning to IVF for now. Even though I also fear that it'll take years to get pg again...
Not sure if that makes sense at all.