I agree, I think you should have a chat to a LC or the ABA or both.
FWIW, here's my advice.
1. Don't give up! You are obviously doing fantastically as your baby is thriving. This is really good news
2. Stimulating the left side is going to help make more milk. It will help getting someone to look at your attachment again, but it could be that bubs just gets very impatient at the left breast because due to the difficulty you've had on that side it doesn't produce as much (my issues are with my RHS and it has always been much smaller). If you feel your attachment is right but the damage is being caused by bubs pulling off/getting frustrated, then I would suggest feeding first from the right when bubs is desperately hungry. Then once you are both more relaxed, offer the left. Then keep offering the left, even if you don't think bubs is 'asking' for a feed. The more you feed, the more milk you'll make and if he's not raging hungry he probably won't be too impatient, KWIM?
3. If all else fails, you can very successfully feed from just one breast. I have been pretty much solely feeding from my LHS for a couple of months now. No problems! I look a bit lopsided, but it's worth it. LOL!

Good luck, mate. I admire your determination. It is still early days and breastfeeding can be tough in the first few weeks. So give yourself a chance. You're doing extremely well!