I live on a farm and have had cats for 45 years. All are rescues, all outside “barn” cats. Many might frown , we have many who lived into they late teens, one 22 and another 25! So to my question. My wife would like an indoor “lapcat” . We have an 8 yr old neutered male who always dashes in the house at any opportunity. How hard would it be to make that transition? Hints on how best to do it?