HELP! Did you do anything to "help" your LOs sleep through the night?! I'm dying over here, my 12 month old sleeps like…

HELP!

Did you do anything to "help" your LOs sleep through the night?! I'm dying over here, my 12 month old sleeps like crap, every. Single. Night. She's still breastfed and I'm considering night weaning because her waking are becoming ridiculous, I'm unsure of how to go about it? I'm 11 weeks pregnant with #2 and I'm exhausted all the time, to the point to where my housework is MAJORLY slacking. I have got to start getting more sleep! She goes down at 9 every night, she usually wakes about every 2 hours sometimes less and very rarely more, I get up with DH at 4 so that's usually in between her wake ups, I go back to sleep and she wakes anywhere from 7-8:30. She's such a terrible sleeper she doesn't even nap for more than 45 minutes at the very most ? I have got to figure out a way to sleep more, it's gotten so bad I find myself getting angry when she wakes so frequently ? I just don't know what to do anymore. I need help!? ?