C.A.
My son is the same way. He will fight and get very frustrated if my milk doesn't let down immediately. This just causes the milk not to let down, because he's not sucking on the breast long enough to trigger it. This just gets us both very frustrated and I've thought about ditching it many times. Now her rarely has a bottle, and will often times refuse it if we try to give him one. So I don't think he's wishing you were a bottle.
I think that this time is a key point for a lot of babies. I only have mine for experience, but my second baby was the same way. She fought and complained if the milk didn't come. I finally gave up with her and decided if it's not enjoyable for either of us, then no reason to fight it. That started about 7 months as well.
I don't have alot of great advice to give you, just to let you know that your not alone and your son does not wish you were a bottle.