daybyday, Tim - when I was dealing with loss 3 years ago, a doctor advised that I change some things around, because physical items, their location and particular routines will prompt constant reminders.
As hard as it is, you should move things around as if you were moving into the home for the first time. Consider repainting rooms. When I moved things and changed the location of routines (like even where I put my shoes on) it made a difference.
When my Step Father passed my Mother never wanted to visit the second home they had as it was exactly as it was left and reminded her of him. We completely repainted, moved things around, new carpet - not a big investment. Hung pictures, it was all different. She wound up moving in.
I don't know how the WW stands the house the way it is right now. The house "feels" awful. We have a grandmother clock in the entry - it's still exactly where it stopped in January. Pictures of "us" are still around. The house is exactly the way it was the day I left. No wonder she's going nuts.
Maybe just try one room everyone hangs out in - make it a weekend project. Do the family room - even slight shifts, move the TV a little, whatever is around it gets changed, paint a wall, move the sofa 2 feet to the left - all this will make it different and new. Because, everything is new from here forward.
Me: 58 Her: 59 Kids: 0 Dog: 1 ILYBINILWY: 9/15 D Bomb: 1/11/16 (found out filed) Verified OM: 1/11/16 Moved out: 1/11/16 (thought it was temporary)