J.C.
Until a few weeks ago, my 9 1/2 month old son was also not sleeping through the night, but was only waking 1-2 times. He would drink a bottle, but I knew he wasn't waking due to hunger, but just out of habit. I couldn't take it anymore (pregnant in first trimester with 2nd child and absolutely exhausted!) and decided to read the Baby Whisperer books (recommended on this website for a similar problem.) Her advice is wonderful, and I have to say, her technique really works. Similar to Dr. Sears, who I am a big fan of, she does not advocate CIO - it undermines trust, however she also realizes that there needs to be a balance- letting baby run the show may be great for baby, but the baby needs a well functioning parent to take care of it. I guess that was what I needed to hear to make me determined to help my son to sleep better, because I felt bad for not wanting to get up for him in the night.
You really do need to read the books to learn the technique, but briefly when he cries for you in the night, you go to him, comfort/soothe, (at our sons age you don't pick them up) and if he stands up, just lay him back down. He will seriously resist, but you stay with him, repeatedly laying him back down. The first night was really tough, over an hour, but the second was only 30 min and the 3rd night he slept from 7pm-7am, The 4th night he fussed for 10 min and for the last few weeks he has slept through every night 7-7. It is really tough because he will be crying from frustration at not knowing how to put himself to sleep, but you are right there with him, reassuring, so it doesn't feel as awful as letting him scream while you cry in another room.
Go get the books - secrets of the baby whisperer and the baby whisperer solves all your problems, read them as quick as you can, make a plan and pick a start date. I bet you will be sleeping through the night in no time. It worked for us and I thought it never would!