You think you are being lazy, but that is in comparison to others, or high expectations you put on yourself.
Lazy is cool, lazy means you need the time. With a new baby to take care of and working, I don t think you can be lazy.
I am telling you, because I am the laziest person on earth right now!
A few ideas:
Supplements: Omega 3, helps me for mild depression, lack of proper rest, PMS.
Also, if you are into that kind of thing: a chiropractic adjustement, maybe the energy in your body is out of sort.
Good luck.