Keep at it, Richard! You're already enjoying the benefits, and there are many more to come. The fun part, if you wish, is to drag family and friends along, although most won't want to because it is hard.
Doesn't matter. It was a successful rep, right? That's how it's done, sometimes fast, sometimes slow.
One thing to not let enter your mind right now is a reset, especially based on what you perceive to be a slow rep during one workout. There are many reasons why that happened that you may or may not be aware of. Give Rori Alter's article on The Reset a read, which will help you decide when a reset is really necessary, and when it's time to switch that lift to intermediate programming.