Too many baths will strip the coat of natural oils that protect the skin, and your dog’s coat will lose some of its shine and luster. However, there are dogs that will need more frequent, medicated baths, but only if your vet recommends it. Once a month is a good schedule for your dogs grooming needs. We use Mauro Pet Care products which promote hydration of the skin vs shampoos that remove oils from your pets skin. You can read more about their products at https://www.mauropetcare.com
Grooming your dog doesn’t need to be a big deal. If you do regular brush outs you per will require less baths and extensive de-matting. If your dog stays fairly clean with regular brushing, you might get away with fewer baths, it’s recommended to not go past 3 months.