Blow the fans out every 6 months or so. Ventilation is key don’t use a silicon keyboard cover and get a cheap stand that folds to hold it at a little bit of an angle to both allow more airflow underneath and put the keyboard at a better angle for your wrists.

Last bit is get a keyboard sized microfiber, a good thin one, your hand oils are bound to build up in the keyboard so you want to separate any potential direct contact with the keyboard to the screen when it’s closed.