Re: Tongue smacking and other ?'s
As babies get older, the really primitive inborn rooting and sucking reflexes generally become less reliable as hunger cues. The baby discovers that she can suck on her hands or on her own tongue and may start using it as a self-soothing technique. Take it as a sign of her rapidly developing brain!
Regarding artificial nipples, she may eventually decide to take a bottle or a paci. You have to keep trying and keep trying different types of bottles and nipples. Having someone who is not you offer the bottle may make a difference: breastfed babies rarely like taking bottles from their moms, since they know that mom has the real goods just a few millimeters away!
The longest a breastfed baby should go without eating... Hmm, I'd say 3-4 hours. But watch her diapers- they will give you the real story. As long as your LO is producing adequate wet and poopy diapers, you can just follow her lead and feed on demand, even if that seems less or more frequent than average.
It must suck to delay dental work due to your baby resisting a bottle! Would it be possible for a caregiver to come with you, and bring the baby to you so that she can nurse during a procedure?
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"