Hi Kindmuis,
Sorry to hear that you are having troubles. I have the same problem with my dd - she was 4 weeks before she breastfed, and 6 weeks before I could latch her by myself, without the help of the midwives at the bf clinic I go to. Even now (7 weeks) it is only very occasionally that I can latch her on - most of the time I have to pump and feed by bottle. We have taught dd to open her mouth wider and stick her tongue out by using the bottle as a reward - wait until she does the right thing, then put the bottle in quickly. It becomes an instinctive thing after a while - open wide and you get your lunch! We still have to work on getting her to keep suckling after she's in the right position, but that's another battle . The other thing we were told is to angle the teat up to the roof of her mouth, which is what she should be doing when breastfeeding. It has really worked for us.
The trick seems to be to keep trying - practice makes perfect. We try for a maximum of 5 minutes at the start of as many feeds as possible, and if she hasn't got it then we give a bottle, because it isn't good to have her get overhungry, frustrated and upset.
I hope that you get this sorted in time. How old is your ds? Pumping and feeding is hard work, and it does upset me when dd can't latch and gets upset. I find it helps to set myself little targets, and say that if there's been no improvement by (2 weeks' time) I'll start to wean her onto formula. I started by saying 4weeks old, then she latched first time, so I said 2 more weeks, then I managed to get her to latch by myself for the first time, so I've said 2 more weeks. Sometimes I think that it is only sheer bloodymindedness keeping me going! Ultimately I've given myself the aim of getting to 3 months - we go on holiday then and I don't want to spend the whole time pumping, so I've decided to scale back a bit then if she hasn't started feeding from me all the time. I can always pump to scale up again if she suddenly starts feeding later. I have decided that 3 months' exclusive breastmilk is very good going, however it is actually delivered, and although formula feeding is not what I'd have chosen by any means, at the end of the day a happy baby is more important. Try to get yourself some help from someone you really like and trust, and persevere for as long as is right for you. Good luck, and well done for keeping going so far!