You seem to be having almost word for word the same discussions that I had a few months ago with both your H and IC. I felt similar to you and was ready to walk (within a week I had brought new duvet cover for our bed, started moving furniture, changed hair, man I was flashing moving on lights to H). When I said the next week after our discussion I had a new house picked out (H seemed v v suprised he was no longer controling things, it hadn't occured to him at all).
It was when I asked him to move help me a large mirror into the living room on a saturday night (favourite piece of both of us), while listening to some funky music in the background and having a wine, that I think our first step back closer was made. It was just so much pressure had been taken off us, nothing else needed to be said and we could just start to hang together again as mates no pressure, like old times in a way. It was a very unexpected window to DB in and I wasn't ready for the abrupt change in headspace after so much waiting for the current nightmare to finish, and how different it got so quickly. Some major gears are going change for you, 24 hour rule really useful at this stage huh?
So I guess I am saying telling him you rang five times is not stalling. Maybe you don't here back until Tuesday and errr don't talk to your SIL like I did thinking it was all over!?