If you are holding up more of the dirty work - what can you start refusing to do so that your W will HAVE to pick up the slack? I wouldn't even say a word. Just see if she has the maturity to do it. Of course with babies you can't let stuff go, but...It's a way to force her hand into doing more work around the house.
That coming from a woman I find intruiging. The less I did in attempt to utilize a similar approach did nothing more than force my XW further out the door and further reason to insult me as "lazy" as she "didn't want to sit around in a dirty house". (When in all reality the bulk of the mess was from her and her "friends", and their children hanging out before I'd get home so they could take off for the night).
Me 35/XW 33 S13 & S12 M: 10/17/98 OM & S: 07/08 D final 06/09/09 12/03/09 - 06/13/10 "Piercing" 06/13/10: Engaged to Re-marry 10/17/10 06/25/10: Expecting baby #3 2/14/11