I usually prepare them only when I’m eating them. If not they might get a bit harder...

They should definitely not be sticky on the inside. I would cook them at a low heat on each side for about 7 minutes.

You can make the dough tho and try them another day (it should be ok for at least two days)

Try making them thinner this time. And if want to you can add some oatmeal to the dough I do it that way sometimes, also chia seeds 🤗