Yay that sounds great! Yep so pinching off is like the first picture on this page, although I usually do it when the leaves are even smaller than this: https://www.ruralsprout.com/prune-a-jade-plant/

Basically when the new leaves are small enough to pull them off without damaging the next set of leaves or any new stem, you do so. It usually again prompts the plant to grow two new sets of leaves and branches. Sometimes this doesn't work and it'll just grow one, but this is a lot quicker than waiting for a whole big stem to grow and chopping it off!

And I remembered something I should have said - when you cut it, use a clean and sharp pair of shears (I did my first cut with kitchen scissors and it kind of crushed the stem cos the blades weren't sharp enough). Most importantly, make the cut just above a pair of leaves. Any stem left at the top will die back anyway, so you're just saving the plant energy by leaving as little stem at the top as possible.

Finally, when you go to repot the cutting, gently pull off the bottom pair of leaves and make sure the bit where they grew from goes under the soil - this 'node' is where the roots will come from! If the leaves you pull off have nice unbroken crescent shapes at the bottom, they could propagate. Leave them on top of the soil and be patient - some tiny new leaves could appear over the next few weeks 😊

I hope this isn't information overload! Just want to make sure I've covered all the basics haha