It seems weird to give instructions on it when the things I do are an expression of an inner desire. If you can't read the posts where people talk about the babyish things they do without it piquing some interest, I'd hazard a guess this isn't for you. The best suggestion I have is to be open to what you want. I don't regress the way a lot of ABs describe but being open to what you want, particularly in a sensual way seems close. Scent is a powerful memory trigger. Maybe try some traditional baby scents (powder and lotion in particular) for a change and let your mind drift where it will.