OH Kaye, you’re so welcome!
You may find plugging for that long, if you haven’t before, just isn’t going to happen. It can be really sore if you’re not used to it. So if you need to it’s okay to take breaks, and in fact that can be a good rule, edge while having a plug break.
Otherwise, try sitting on a vibe with the plug in you, that’s fun, and edge as you do with your fingers!