Clara - my DH is taking time to bond with our new DS, who is now six months old. We have an older daughter, who is nearly 2 1/2, and he was not as hands on with her as I had thought he would be. I had expected him to be bathing her and changing lots of nappies but he was not keen. However, he gradually became more involved and became really close to DD when in charge whilst on paternity leave after the birth of DS.
A friend noticed the other day when DH met up with us all that he greeted DD enthusiastically, but completely ignored DS. He is starting to pull faces at DS and tickle him sometimes, but only for short periods. He will hold him if I ask or feed him but does not volunteer and isn't really keen. However, I'M NOT WORRIED! I just don't think he's interested in babies and I've seen how close he has become to DD, even though he wasn't that hands on to begin with. He now voluntarily gets up to her in the night if she cries, gets her to help him with jobs around the house, reads her stories, buys her presents, and takes her on outings on his own.
I hope this helps to reasure you a bit. I'm not sure I would recommend encouraging your DP to talk about it with someone as I don't think my DH would be keen to do that. However, you know him best. Also, making him feed or change nappies might create resentment too. I found just asking DH to hold him now and again whilst I went to the loo or put the washing out etc. helped. He then got to pull faces and play with him, getting a fun reaction back. It helps once baby can smile (about 6-7 weeks).
With regard to breastfeeding, I think this is a difficult one. Whilst you should be able to breastfeed in front of your partner (and indeed in public) our society has funny views about breasts that are pretty engrained, and if you partner has strong feelings about you and your breasts it might be best not force the issue in front of him, i.e when you're eating. I'm sure others may disagree with me, but I don't think now is the time for you to be dealing with his 'breast' issues - better just to find a quiet spot with a good book and let him get on with the household chores!
By the way, me and DH were in separate rooms for two or three months after DS was born and I was happy with that. He got to sleep and then could function better during the day; I got to feed and change nappies without worrying about noise. Do whatever works for you.
I really hope it works out for you. Try and stick it out for a while. It really is early days!