Sorry to hear about your problem. I have heard many people mention that about similar problems like yours, including me. Your hubby is probably still trying to adapt to new changes in life of having a new addition in the family, to cope with new things - being a good daddy to his darling baby.
Maybe you would like to leave baby with your in laws or your parents for a night, and both of you check in a hotel and have some great intimate time together?
Getting yourself dress up sexy may help too. Create the atmosphere. Give him a great massage when he reach home from work.
Hope this helps :P