I just wanted to chime in with some BTDT support. Cosleeping and demand nursing has worked wonderfully for us, but I remember a time at around 9 months that I was exhausted. 8-10 month olds have a lot going on developmentally (plus it can be the peak of separation anxiety!) and it can be hard for them to sleep regardless of parenting approach. What got me through the sleep regression that preceded my toddler's beginning to walk and accompanied some teething was reading some AP blogs and old threads here--turned out that a lot of mamas found themselves pretty tired right before some big developmental leaps around that age, and that it soon got better for those who kept on keeping on. We kept up with demand nursing, cosleeping, walking and rocking when DD needed help resettling, and as soon as that phase passed our sleep improved a lot. You're doing awesome!