M.M.
I was 37 when we had our first, and it was the same for me 2-3 hours. I understand completely! If she is feeding fully off both breasts, she may not be getting enough milk. It's no fault of yours, she's just growing faster than the milk supply. You might want to start adding a bottle with some rice cereal in it...just poke a hole a little bigger in the nipple. If you don't want to do milk, maybe you can pump during the day and save some for a nightly feeding. Make sure you alternate breasts though for pumping! No matter what I did though, she still loved getting up and spending time with me....enjoy it, as one day you won't get those chances to be alone with your little one! :-)