I have also worn this kind of guide plate, which is used to correct maxillary and mandibular occlusion.

At first, it was hard. I can't eat anything. I ate porridge every day at that time.

The doctor said it's best not to take it off when eating (mainly depending on what you wear to correct it, I didn't take it off), so just get used to it.

You can clean it after eating, which is also good for oral hygiene.

I hope my answer is helpful to you ~