A.B.
It's normal for them to cry periodically. At 10 months, he might actually sleep longer if you put him to bed earlier. My twins went to bed a 6 at that age and slept until 7 or 8 in the morning, with one, sometimes two feedings. FYI, my oldest was never made to CIO and was a terrible sleeper, hence my reasons for letting #2 cry. Anyway, he's the only one of my kids who is ever afraid to go to bed or comes to us in the night or tells us he's lonely in his bed. It breaks my heart to hear them cry, and if you think it's bad with one, you should try it with two, but the benefits are so many that I wont even hesitate when the 10 week old sleeping in my arms is old enough and ready.