What can I do to become a better girlfriend and make my boyfriend a happy man?

My boyfriend and I have been together for a year and a half now and I love him more than anything but ever since I had our son 8 months ago I have been in a funk. I have not been nice, snappy, moody, not wanting to do anything, and lazy. This is all not me and I want some ideas on what I can do to prOve to him I'm ready to be a mom house girlfriend and take to next level. We want another child but he feels like I haven't done what I said I would do in begging and take care of our home. How can I fix this funk I'm in and be better so we can move back in together