I've been using side lying nursing in the early am hours and I really like it...although I've had to limit it since my LO has a stuffy nose.
Once I latch him, I don't worry about how long he's been on since I just judge by the fullness of my breast and switch to the other if I feel he's looking for more. After some time, I just hear sucking but not swallowing and he begins to move around a lot as if he were fighting sleep. Does this happen to you? I figure it's normal since once done eating he unlike me may be awake for a little while then tries to the soothe himself to get to sleep. I just wish he settled a little quicker since his moving around keeps me up!