hi,
i think your routine has probably gotten more off kilter cause of sickness. by 10 months, unless your parents did something REALLY wacky, he should be okay from that.
if he's waking that cranky first thing in the morning, i think i would work really hard to get him to go back to sleep. he's not even hungry for another hour, so i think it would be worth it to invest some pu/pd time to try & extend that nighttime sleep.
also, i noticed that you were going 3.5 hrs before his first nap... that's probably too long, and though he could sleep, he's now overtired and it's hard to sleep (thus throwing off the rest of the day). on a super good day, i think luke was going 2.5 hrs, but it was usually closer to 2 hours. as the day goes on, they can handle longer & longer A times. however, if you work on extending wake up time to 6am, 8:30 is a good nap time for him.
anyhow, hopefully that gives you someplace to start!