49 years

I have found that developing a schedule for 15 minute talks every day or every other day works well. The second thing I recommend is picking two AR videos to watch together early in the evening. Again, we started watching these videos every day and then 3 or 4 a week. Following viewing the video, we would discuss the instruction for a few minutes.
Bring the betrayed spouse, I would pick out the videos to watch. Sometimes during watching the video, my wife would stop when a point was made to discuss.
Just some things that have helped us. 15 months since d-day!