allthingswillpass hi, my dear, thinking of you and I hope this will get easier.
I am not yet an adoptive mummy, as still waiting; we do have a birth child (now 8).
Please can I give some advice which may be of use?
Firstly, please do not walk away from your dd when she needs you.
Although you love your DH and want to support him too, you must make DD a priority, and so must he. You are team parents, in it together and he is a very integal part of that parenting team. So he needs to keep positive and ready.
When my dd was about 3 she got very attached to my DH and actually told me she wanted me to go and live elsewhere!
. Although every fibber of my being was telling me to grab her and beg her to love me, I said things like "I live here with you and daddy, I am not moving out." We did all the normal family stuff and over time DD became perfectly normal with me again.
It is probably massively more complicated with an adopted child so I would say to follow all this wise advice from Devora, Kew, Lilka and co (sorry if I missed off massively helpful advice from anyone). Whoever said to read up a bit on the internet I second that, and encourage your DH to read up too, to see how normal this all is. To find the best ways to do stuff as a family.
How old is your DD?
If you child is anywhere around age 3 or upwards I think this game could be useful - The Family Links' game
www.familylinks.org.uk/onlineshop/nurturing-game.htm
Speak to your social worker or support if you like to make sure it is OK. It is a board game and as you move round the board you tell each other things etc and also it basically gives ideas for things like 'kind touch' which could be a hug or a high five etc. You can play it as a family. If your DD sees you giving your dh a high five etc she may feel more like doing that herself. But you can't force it so you may need to make sure your DH would be OK with the game if he did not get a hug or high five.
I am not an expert so please ignore this if it sounds no good!
Can I also suggest that you and your DH need to spend some quality time together when your little one is sleeping so he can get some extra love and care from you to help him through this time. It puts a bit of a burden on you but maybe you can make the love and care nice things you will like, like a take away and a movie, a nice meal together at home or an early night once your DD is in bed!
All the best.