claire, hope you can get good real life help soon....a talkboard can only do so much :)
Perhaps ask the midwife to visit again specifically to support your feeding. It would be good to have her weighed, too - you don't say if she has been weighed.
Call one of the bf helplines.
Topping up can be bad news when establishing breastfeeding, and scheduling feeds is not good either. In both cases, it stops your production from meeting your baby's needs - so it's good you are addressing this.
When she screams after an hour, it does not mean she has 'drained' you....it may mean she just wants a break and a cuddle and some soothing. Do this, for a little while, and then try her again. Babies tend not to latch well onto the breast when screaming, but because the bottle teat can be placed in the mouth more directly, it can seem they wanted the top up.
At 8 days, a baby might well have varying times at the breast, and be feeding very frequently. It's helpful to have them close so you can respond to early feeding cues.
I do think it will help to have a good conversation in real life though.