10 month old DD has always been a bad sleeper but seems to be getting progressively worse. She either wakes up regularly all night, sometimes as much as every hour. Or she will sleep ok until say 1am then refuse to go back to sleep for 3 hours. I'm feeling especially sleep deprived today and it's starting to get me down. Feel like I haven't been able to enjoy maternity leave to its fullest and am worried about how I will cope when I return to work in 3 months. Anyone got any ideas or words of wisdom?