ESTABLISHED CUSTODIAL ENVIRONMENT may not be disrupted absent clear and convincing evidence that it is in the child’s best interests. A custodial environment is established if “over an appreciable time the child naturally looks to the custodian in that environment for guidance, discipline, the the necessities of life, and parental comfort. the age of the child, the physical environment, and the inclination of the custodian and the child as to permanency of the relationship shall also be consider…