oh bleu you poor thing, sending lots of hugs.}{}{}{}{}{}{}{}{}{}{}{}
you've answered your own question though, you say you don't want to stop. Meg is still thriving so you're not starving her. So you need to work out what you need to be able to survive this rough patch.
My suggestion: Tell DH and your dad to stop bickering RIGHT NOW as it's doing your head in. Are they bickering about anything in particular, or is it about the bf vs ff debate? If so, tell them they're your nipples, so it's your decision .
Take to your bed with Meg, tell them they have to do everything - feed you, change the baby, walk round with her between feeds so you can sleep etc - you need to rest and spend as much time skin to skin with Meg as possible.
I'm going to chuck some questions at you now, sorry if you've already answered them earlier:
Are you using Infacol, have you tried a dummy, will Meg suck on a finger to settle her in between feeds? Have you seen a bf counsellor, from NCT or La Leche for example? I'm sorry if I'm going over old ground. Maybe call a different one, see if someone else can help? Cranial osteopathy? Baby reflexology?
You sound to me like you don't want to give up, but you're exhausted and stressed - so maybe see if you can take the exhaustion and stress out of the equation for a bit, just be waited on hand and foot - is that possible?
I really feel for you, no sleep makes it so difficult to have any perspective whatsoever. Sending even more hugs {}{}{}{}{}{{{}{}{}