emmaegbert, I love the image of your son emptying out the baby bottle ... like an addict getting his fix -- but cute, if that makes sense? :)
Anyway, just saw this thread and so happy it's here. My youngest turned 3 over the summer and we're still going strong. She doesn't nurse a lot, but she's very attached to it, and I do plan to tandem when the new baby arrives. When I first got pregnant I wasn't sure, but I've found I really can't give it up and since she's so gung ho herself, that makes it easy. I'm actually looking forward to having her visit me at the hospital as soon as possible after the birth so she can help get the milk flowing. You just know the nurses are going to love that one!
All of that said, it hasn't been a painless 9 months. My nipples have been sore, sometimes excruciatingly so, the entire time, but I guess it hasn't been bad enough that I was really ready to quit. She has asked me several times if the new baby is going to nurse like she does, and I was grateful for the opportunity to say yes so that perhaps she's at least a tiny bit prepared for what that will be like (sharing me, I mean). And I think for the most part she'll be really ok with it. She really only nurses at night and in the morning nowadays -- -sometimes more if she's really tired or gets a booboo -- and I half expect she'll want to nurse more when she sees the baby nursing ... but, my plan is just to be as relaxed as possible for as long as possible and then, when I feel like I need to set limits, probably after a week or two, we can address that then.
Let the adventure begin!