Relationship rut with Hubby

C
Our world has been crazy.  We just bought a house, our daughter is 6.5 months old, he works, I'm a SAHM and a stepmom to his two boys (2 ex wives prior to me).  We argue about all the stupid stuff.  I'm working hard on the house inside and out and taking care of the kids.  The arguments are annoying but I can tell we are both stressed out.  I have an IUD so sex life is hardly anything since it pretty much zapped all of it.  He's frustrated that I'm still solely breastfeeding as I think he didn't realize I would do it this long (even though we talked about it), and he can't help feed her.  His sons were 100% formula fed and he's been more involved dad than the moms ever were so he's pretty much always had the kids.  The boys sometimes go for sleepover at grandparents house and sometimes see their mom (one only sees her 1x a year because she moved to different state), the other sees her when she doesn't cancel.  Lately hubby is also frustrated that I'm not working even though we also talked about that.  It's just a lot of frustration.  We aren't super social people so not a lot of friends and our hobbies aren't existent because everything kid related takes over.  Our loving vibe has been gone awhile but I want it back.  I want him to talk and joke and want me how he use to.  How can we get past the frustration, arguing, sleep deprivation, and just feeling plain worn out?