how often should you bathe your puppy?

my aussie is 9 weeks. she pees when happy scared excited, anything, and we’re potty training. she sometimes sits in it rolls in it, i bathe her id say twice a week just because she is dirty. google says bathe once a month or it can damage her skin. what do i do about the fur being nasty all the time? she usually sleeps with me if she’s not dirty and gets in my bed to play so i don’t know how to avoid the filth with out bathing her all the time.