gosh, i just saw your replies...
things are much better. i went back to very simple solids (sweet potatoes, rice cereal, and applesauce, basically) because he got a stomach virus, and wouldn't you know it, the night-wakings almost stopped! now he's up around 12 and 5, and i dream feed both times. i think you ALL were exactly right... tummy aches and sep. anx.!!!
my dh and i have also been a lot less hands-on when we go in to check on him. we have been giving him 5 minutes (to cry, fuss, talk, etc.) and then go in a verbally soothe him or rub his back for about 2 minutes. then leave, and only go back in 5 more minutes if he is still upset. so far, we've only needed to go in once before he settles. (he's also finally learned to sit by himself after pulling up- which used to be a big problem!)
thank you so much for replying. i am absolutely addicted to this site, and have found so many posts soooooo helpful!
betsy