I was you 6 months ago, it does get better I promise. DD2 is now sleeping through the night eating everything and feeding herself at meal times, just eating what we do. You WILL get through this, but I send you loads of unmumnet hugs.
We just kept going with the bottle and eventually she took it, I never thought she would, one day she just got the knack of it. DH fed her with the bottle, not me plus the nursery helped out too. I started back at work at 7 months with DD2 still bottle refusing, I was beside myself. Luckily DD2 is in the same school as me, so I was able to nip in at lunch time, breaks and preps to feed her. It took a few weeks, of every one at school I think in the end, but she suddenly just got it. She is now one of those babies that downs huge bottles of milk before bed!
Solids, also a disaster for ages. She wouldn't take solids or mush, again we just kept trying, again she just suddenly got the hang of it.
So sorry i have no special tricks or advice, I know how hard it is. DD2 was waking every 2 hours and then I had to lug my exhausted body to work and teach a class of year 6's and worry about running around feeding her. It was a nightmare, but it did pass, it did get easier and I have now caught up on my sleep. Once you have got her taking a bottle it gets easier as someone else can feed them, also I think it did help DD2 sleep longer.
You are doing an amazing job, just keep going.