Am I️ ruining my kid??

So my girl has NEVER been a good sleeper. She’ll be six months next week.

She hit the 4 month sleep regression hard. I started co-sleeping at least part of the night when I️ went back to work full time. Now I️ can’t put her down at all. She pops awake crying and does not self soothe.

I’ve been home with her for 4 days and today unless I’m breastfeeding her, she’s fussing. I️ feel like I’m ruining her! What should I do??