I think my milk supply has dropped quick

I am trying to power pump and nurse often but she is just not having it. I’m so sad 🥺 unfortunately the same thing happened to me around the same age with her sister. I thought this time would be different as I was over producing. But since Sunday all I have seen is a drop. My let down isn’t as forceful and she loves for my let down I’m not pumping as much and I know she isn’t getting that much cause she’s on the boob tops 2-3 mins at a time. At night she is a champ but during day nada. Sorry I guess I’m just venting cause I’m sad if this is the end.