My baby cant stay asleep or even sleep??

Ella

Basically i cant get my baby to stay asleep at night. She sleeps fine throughout the day but then night comes and shes restless though she is tired. And will cry and whine till 3pm when finally ill lay her down for the hundredth time and she'll stay sleeping. Me and my husband havent slept at night all weekend. I've tried everything, drops, bath and lotion for bedtime. Other stuff i cant remember. I dont know what else to do anymore im horribly exhausted i almost had a break down. I have work tomorrow and im pretty sure shes gonna do this again. Shes 7 weeks old btw dont know if that helps. Someone have ANY ideas or tips?? Please 😭😭😭