Chastity and orgasm denial discussion

I have owned my first device for about a month. It might be around 10 days that I’ve been locked, if anything.

Today was exciting because I managed to get in and lock up in under five minutes. I think this is thanks to how much lube* I use. I used to try using as little lube as possible, but I got tired of the exhaustion involved in locking myself up alone. Also, soreness became an issue, so I decided to increase my lube usage. Today, I pulled out completely.

How do you know exactly how much lube is enough?

*I keep petroleum jelly and, ironically, “Stroke 29 Gun Oil” masturbation cream on hand. The latter has been great for lubricating my cage.