Dove, I could almost have written your post - my DD was premature, small, jaundiced & sleepy.
Despite expressing night & day, initially by hand & then pump, trying biological nurturing, skin to skin, nipple shields, rooming in before discharge etc etc, DD wasn't able to latch on & my supply wasn't adequate - 20ml from my right breast after a month of expressing round the clock - bloody depressing!
I had great support from scbu, both in hospital & at home. I persevered for a month, putting myself under immense pressure & to the detriment of my 4 year old, who was plonked in front of a tv all day every day as I desperately tried to express after every feed, get her to latch on etc. I didn't leave the house for a month.
Despite all this, it didn't work. I spent most of that month in tears, feeling so miserable as I wasn't BF.
It was hell on earth & a relief to stop, although I still feel sad to this day.
I'm not sure if I will ever get over it, but I have moved on & am just trying to enjoy my DD, as I couldn't do that during the month I was too busy trying to BF.
Please don't feel bad. You tried bloody hard! Be kind to yourself & enjoy your baby xxx