From my experience, online classes are usually set only one or two due dates for all the assignment for the whole week. That specific pattern did not make me suffer but my original action in my first online class is doing all work in that due date night. And that is a lot of work, so I had to lower the quality of some homework.
I had a successful experience in online classes last semester. I had a communication course and a food science class. I plan ahead the week for my food science class every weekend. But for the communication course which is a harder course in my opinion, and I usually do not have any other tasks in Wednesday night, so I put all the work of the communication class in that night. And it works fine. I got both courses graded A and learned a lot of interesting knowledge.