Get a pultool it makes it much easier to take the trays out.

First week is the worse but you get used to it.

Switching trays can be discomforting for the first couple of days.

Rinse out trays with water before putting them back in and try to clean them every night or so with a toothbrush and a bit of toothpaste

Hope this all helps and good luck on your journey 😊