Was going to suggest co-sleeping!
Could DH get up with the early risers a couple of mornings a week, and do breakfast for them and him, leaving you and baby sleeping til 7? Obviously thats not going to work when you go back to work! The other thing that made a massive difference to me was a sat morning when I would feed, and then DH took baby away for 4 blissful hours of uninterrupted sleep. He basically did breakfast and clothes, and then went out.
You ARE doing what is right for your baby. FWIW, my co-sleeping, bf baby is now a 4 year old who has been sleeping through reasonably reliably for about a year now. I still end up in bed with him maybe once a week, but thats me and him in the spare bed, and he's much less wiggly now!
Suggestion for doing? Would she co sleep with DH? And so do a form of night weaning?
I felt much better if I could get 4 hrs straight sleep. Any way of just stretching it that extra hour?
Plan? I muddled through, but telling DS1 that Mummy and Daddy needed sleep so they would be less cross and grumpy, and if |Mummy and Daddy got more sleep, they would be better at doing fun things worked - he slept through for the first time that night........ Think he might have been a little older, but it might be worth trying.