LW1- Obnoxious grandma may be the first person you feel you have to justify your choices to. I guarantee she won't be the last. It will amaze you how many people you come in contact with who think they know what's better for your child than you do. If you think it's bad now, wait til your child goes off to school. Put on your big girl panties right now and memorize this mantra - "My husband and I have discussed this with our baby's doctor and this is the decision we made". Then refuse to discuss it further. The concept of an impenetrable brick wall is the only thing some people understand. Good luck to you.