Ok, if he's only taking a 30 minute nap for that first nap, he could actually need a shorter A time before that first nap. 30 minute naps are often overtired naps.
I would also tend to agree with this:
might be going through an early growth spurt at 10 and a half weeks.
-- you can read all you want about the "typical" growth spurts by the fact is it doesn't actually mean that our babies go by that -- my ds especially tended to have them at all sorts of times that weren't the traditional growth spurt times. Double sided feeding is a great idea -- and if he's trying to take full feeds at 2/2.5 hour intervals during the day it might actually help get some more into him and stimulate your supply. Are you feeding him at all the night wakings? Is there any chance of discomfort going on? Are you getting good burps out after his feeds at night?
As you have other LOs, I don't need to tell you that night feeds are totally normal in bf babies -- and, in all honesty, my ds was nursing every 3 hours around the clock until he was a few months old -- but I will say that every 2 hours makes me think either growth spurt or discomfort.