I give baths to my three every Sunday afternoon so weekly would be my suggestion. They also go to the groomer about every 6 weeks although this last time it was almost 10. But I still brush daily and bathe weekly. Currently, I am using
BioGroom and love it. They have a puppy shampoo called Fluffy Puppy that is tearless too. If you go to their website they you can contact them for samples.