Sleep ... finally!

For a while there, Alex was a dream baby (well, actually, he still is). He was sleeping through the night - every night - and eating like a champ. But then, about a month or so ago, he got sick. Not just the sniffles, but a fever and a virus that caused blisters in his throat. He projectile vomited for the first time. Anyway, he got over the illness quickly, but hasn't been quite the same ever since. He has been a horrible sleeper; on Sunday night, he woke us up about six times in the night (Andy and I each got up three times). But then last night, we had an honest-to-goodness full night of sleep! It was amazing. Even more amazing than when he first did it months ago. But we still need to figure out the eating thing. Before he got sick, he ate everything we gave him except peas and apples (I know, weird). He ate carrots and sweet potatoes and prunes and more. His favorite food, though, was peaches. Ever since he got sick, he will only eat peaches. Anything else we give him, he cries and shakes his head back and forth and slaps the spoon out of our hands. He won't even eat baby food that has peaches mixed with something else (like "fruit medley"). And, yes, we have tried airplane motions and noises. He thinks they are funny until the plane comes in for a landing. Any recommendations?? Anyone???