HELP!

At 2 month my daughter started sleeping through the night for a full 12 hours... clearly that was too good to be true because at around 6 months she decided that sleep was no longer a thing. I've continuously told myself it's just a phase and she will start sleeping through the night again but it's been 2 and a half months and she's just gotten worse 😩 She wakes up every 2 hours (sometimes even less) throughout the night and trying to get her to nap during the day is a huge struggle and takes me forever to get her to sleep. I feel like I've tried everything. We have a set night time routine; warm bath, lotion, pjs, bottle, book and then I rock her to sleep at 7:00 (and yes I have a white noise machine). Does anyone have any tips? I feel like I'm going to go crazy if I don't start getting some sleep 🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️🤦🏼‍♀️