I tried the 4/3 day switch you mentioned for about 4-5 mos, until the vets on this board convinced me to stand up for what I wanted. I had been accommodating my WAW and she was comfortable cake eating. I moved back to the house full time in Feb, which resulted in temporary anger from W (as I expected). One of my biggest regrets is that I didn't take this stance from day 1. If W feels she needs space, make her be the one to find it.
I can tell you since moving back home, I feel so much better about myself, the example I'm setting for my kids and I get the feeling that it forced W out of her cake eating ways.