Hello, I'm an amateur detailer, have been detailing for about five years now, but never have had to deal with leather interior. I purchased a dodge challenger that has the Nappa leather with the cloud overprint. I'm curious as to what the recommended product to use on this leather would be? Also, would like to know if there is a recommended schedule as to when I should do it? Like twice a year or what? It's a weekend driver and sits under a car cover under a covered building when it's not being driven. Thanks in advance for any suggestions.