Cant keep up

Help there is so much informarion to absorb I am struggljng to keep up. In addition my job responsibilites have increased significantly. I am startng to feek like I cant do this work. I don’t want to guve up, I know if I do i will feel much worse.
I am startint to think if I cant keep up maybe I should just put it on hold for now. But I know there will never be a better time, so I am trying to work changing the thought, I am overwhelmed and exhausted. Any advice is greatly appreciated.