Please help!

Okay moms I need some serious help. My little girl will be 6 months on the 8th and she’s not sleeping. She’s never been a “good sleeper” but it’s just getting worse. She will take maybe 3 30 mom naps during the day and she’s getting up 4+ times a night and drinking 4oz bottles and falling back asleep. I mix oatmeal in with baby food before bed hoping that will help and it doesn’t. I feel like I’ve tried anything and nothing is working. I’m so exhausted. Any one else having these problems? Any suggestions?