Our S are about the same age. Our milage may vary, but I want to give you a look at my situation.
I worked a lot and my X took care of S. I took time of from work and arranged for shorter days her and there, but my X was always the one doing the bigger half of the work in regards to S.
Now, I was far from perfect, but I still : -changed diapers -fed him -bathed him -played with him -took him on walks -put him to bed -stayed up at nights if he was sick, even though I had long days at work ahead of me -got two months+ off from work to spend time with S while she could work -etc
and STILL : when I asked for more time with S after BD she asked why I suddenly started caring about spending time with S when I didn't before.
If I can do all of that and my X still thinks I didn't care, then imagine what your W might(!) think when you haven't even changed a diaper.
The only positive thing I see about BD is that I now really see just how much I appreciate time with S alone. I enjoy every aspect of it. If you get to spend time with S alone, maybe you will start to relax and enjoy it even more.
Together for 8,5 years. S2 Interest in OM. She left 29.09.12 b/c we couldn't work things out. No signs of OM, not digging. Living in seperate homes, sharing custody.