Thanks for your reply and appreciate the suggestions!
She has not talked to her doctor about her low libido and yes it has gone lower from the exhaustion of caring for the baby.
I understand how she might be feeling and that makes me more embarrassed about the situation. Well, about having a lot of times, not really, I am mostly busy with many other things besides the hectic office schedule, with outdoor sports activities and with my other hobbies which I am very passionate about. Having said that, I understand your point, I need to avoid an idle brain and body.
Having at least one date night per week seems to be a pretty good idea.
Thanks again for sharing your thought and for the advice.