Baby-work balance. 1st time mom

My baby boy born on 3rd July.

I dont know anything about taking care of a newborn. My work started on 8th July but i am so overwhelmed and i cant focus even though its a remote job. My baby stayed up all night yesterday and i dont know how will i cope up. Asking for additional holidays is not possible and i dont/cant quit my job. Please tell me how do you manage your babys routine? Right now i wake him up after every 3 hours to feed him. He sleeps in his crib but this because we are still at the hospital. How do you guys stay in control and manage. I just need good tips and advicesz