If she wanted to jump your bones she would. Clearly she doesn't.
Not sure if you're taking the piss or serious, if by some minute chance you are serious then talk to her.
However, before you do, have a think about how you treat her, what you do around the house, who is getting up with the baby night after night, who is doing all cooking and cleaning etc. and who is doing all the organising & thinking, now you have a child.
It's a massive turn off to find yourself living with an entitled git or a manchild.
I'm on here now...obviously (if I wasn't if be studying), DH is looking up things to do this weekend.
We are also both watching 'Mock the Week'.
Even so, we are both looking at each other smiling when there's a funny but on the telly, and catching each other's eye generally so aren't vompletely absorbed in our phones. There would be a problem if we both had tunnel vision.
In short, it's not the amiunt of time spent, it's how focussed you are and what you do when you finish. DS should be asleep now. Night night