Hi chipping in here, Ben does EXACTLY the same, he loves sucking on his dry bottle. My sil says my niece also used to do it, and stopped by herself. I get the feeling that the sucking comforts him - teething - and I've decided to just let it go. One of those things. But we try to hide the bottle, haha!
Do your lo's suck to sleep? I'm so conflicted, mine is refusing to go to bed at night right now, after having done it for ages, and I know a bottle will help, but trying hard to avoid it. Ideas?