Modding Request or WCIF (?): I need to modify a crib.

Don't judge me, but I would like to modify a baby bed for an adult. I need to increase its size and change the bed and mattress age tag, but I don't know how to do it myself. If anyone can help, it would be great, and then I send the MODS that I would like to edit.



Thanks to anyone who can help, or at least explain to me how I can do it.