mara, I have been there. I am there. I know what this is like (except that I don't work, and I can't imagine working with this kind of sleep deprivation. I would ask how you do it, but I get so sick of people asking me that question. You do what you have to, duh.) I can count on one hand the number of times in 14 months my boy has slept longer than a 3 hour stretch, and most nights for us are in the 1-2 hour range. Little catnaps. No rest for mama. I hear you. And, the 9 month stage was particularly tough for us. I remember a month or so of 30 minute stretches. That is pure insanity.
My advice may not be popular, but here goes - hold on for a few months and then nightwean. We're in the middle of nightweaning right now and I can't yet vouch for its success, but it works for most people. It's not something I ever thought I'd do and I'm not happy that I've exhausted every other option I could think of (homeopathy, cranial sachral, dietary changes, all kinds of changes in our sleeping configuration, white noise, bedtime routine, blah blah blah). But, so far nightweaning is not as awful as I expected (we're only on night 1, though, stay tuned)... We waited until we felt Jackson was at least sort of ready for it, balanced with our own desperation. 9 months is a little early, but maybe you can hold on for a few more months if you know there's an end in sight??http://drjaygordon.com/ap/sleep.htm
is a gentle nightweaning plan worth reading.
Love to you, mama. Hang in there. Take as good care of yourself as you can.