hairdog,
That is how I got my W (to my absolute amazement) to agree to once a week. I said it was "just as an experiment for a couple of months or so and what harm can it do to try?" and we are still going after a good few months. I see no reason why it should stop and am fairly optimistic that we could introduce another day in future.
Go for it hairdog! Don't wait for a month, start planting the idea in her head today and by November she should hopefully be ready to start.
SD