Hi there! I'm a first time Berner owner, and my lil gal River is almost four months old. We are having some trouble with leaving her alone, and training her to be by herself. At the moment, whenever I put her outside, no matter what she has outside with her whether it's toys, treats, music, or how long it is, she just barks and cries and tries to jump on the door to get my attention. At the moment I'm home most of the time, so her being inside isn't a problem, but when I go back to university there will be a few days a week when she will be alone for up to 5-6 hours and I'm worried that she's just going to bark and cry and jump up on the door all day while I'm' gone. Does anyone have any advice on how to get her used to being home alone? Thanks!