my 4 month old recently started refusing one boob, which I hear is fairly common. However, she now takes the side she previous refused and has started to refuse the previously preferred side. No rhyme or reason too it, she’s not unwell and no sore ears as far as I’m aware. Should I just ride it out and hope it resolves itself over time . I have tried all different positions. Is it simply just a case of baby doing her own thing ?