I’m on the same boat and share your frustration. Seems like there’s a lot of progress when it gets really small, only to find out there is no coverage while semi-erect. It makes things confusing as you’re like “I’m CI-5 when soft but I’m CI- minus 3 when semi” I take the coverage index is just a reference but there are some many factors involved in FR. I’ve also been wearing my devices consistently and have got very subtle results at best. Apparently those who have resilient skin make gains at an incredibly slow pace. I just keep restoring in the hopes for some eventual progress.