I seem to be posting alot of problems here recently
, but then, I seem to have alot of probs with feeding 
DD is 3 weeks. We have been topping her up at feeds with formula for about 2 weeks under mw advice as she was loosing weight. She seems OK now but they want me to continue with some bottle top ups as they seem to think it's working well with her weight gain so why stop.
Problem over the past week or so is that she's getting confused re: latching on to me because of bottle feeding. When it first really became a problem I thought it was due to the thrush we both have (she had/has it in her mouth and me in nipples) and she might be uncomfortable in the mouth, but, we still have the problem and, although she's still being treated for thrush, it looks like it's pretty much gone.
She now either just does an odd sucking thing on my nipple like I was a bottle and doesn't get anything out or she sort o latches on, but only for maximum of 5 seconds (yes, I'm sad enough to time!) where she sucks and then comes off and we have to start over again.
Feeds in the past couple of days have taken 1 - 2 hrs of me trying to latch her on and then eventually giving her a bottle of top up after but with a bit more formula as she's not getting much from me.
Past 2 feeds I've been in such despair and she hasn't got it and has been so upset and hungry I've just expressed and given that to her in a bottle.
Really not sure how to go about getting her back to feeding on me. Asked hv and mw and they just tell me she'll get it eventually, but, their not the ones trying to get DD to latch on to me for 2 hrs when she's getting more and more hungry 
Any advice or ideas?