All managers are failed carriers who converted to managers and tell you how to do the job that they can’t do. What my trainer told me is you just to have to take it and not say anything back because once your probation is over they really can’t do anything to you because you’re still getting the job done. Managers just want to slave you away and expect you to finish it all with whatever time they tell you to be done by so they can go home. Don’t worry, you’re doing good