Just to clarify, this is about behavior modification and orgasm denial without a cage. So, not locked at all, until earlier this year when I had managed to refrain from orgasm for a year. Because we now know I can stay denied without a cage, it's okay to use a cage. We're a little odd that way.
I actually have a Dorky Orgasm Tracker from when we started in 2013, let me check. I started tracking end of July 2013; the first period of over a month was from 9/22 to 11/1 of that year. So, two months of trial before we could go a month without orgasm for me. After that it's a mix ... periods where I come a lot, every 2 to 3 weeks, often without permission; periods where I go a month or more without.
It took until 2019 to figure this out enough that I could stay denied until end of May 2020, one year.