Hi Lauren,
I have to admit, I am a clock watcher. Obviously, if there is something else going on (sick, short morning nap, etc) I adjust accordingly. I found that if I let him sleep at the 2 hr mark (when he might be tired) he would only sleep for 40 mins. If I could hold him off until 2.5 hrs he would sleep for 1.5 hrs. If I left him longer than 2.5 hrs he would only sleep for 40 mins.
Yesterday I did 2 hrs and 45 mins and he was fine. So I'll try again today.
Thanks