First of all,
Soulsinginmama! Sounds like you're doing great comforting your daugter. If your desire to meet your babies needs is clear to me, I'm sure it will be to them as well. I have the same fears- my dd will be 18mo also when my next baby comes in Sept. I'm sure the "how" will become clearer when we actually have to do it.
My only thought is-- Bring in the reinforcements! Can Daddy help? Can he help comfort your dd at night and help give her the additional comfort she's seeking? Or maybe when the next one comes, he can help with it at night while you go to dd? If my partner is a great help now, I can only imagine that with two he's going to be essential.

My only thought is-- Bring in the reinforcements! Can Daddy help? Can he help comfort your dd at night and help give her the additional comfort she's seeking? Or maybe when the next one comes, he can help with it at night while you go to dd? If my partner is a great help now, I can only imagine that with two he's going to be essential.