It depends on your level and the Unit you belong to. As a progressive method, we increase the difficulty and workload in each Unit. A player with an ELO rating between 1950 and 2150 will need about 16 hours of monthly learning and training for Unit 1 and 26 hours for Unit 6.
This doesn’t mean in any way, that if you have a high level, Unit 1 will be easy. It simply implies that it will require less time than other students with a slightly lower level. Obviously, considering that the student is within the ELO ranking advised for the completion of the course.
Remember, that this course does not require a specific daily dedication. You can distribute your time accordingly yourself. The dedication needs depend on a number of factors, such as the quality of time you dedicate, your previous knowledge, and your ability to assimilate concepts on one hand, and on the other, your ambitions and how far you want to go. We all know that when we are faced with a position that we cannot resolve at first, it is up to us to make an effort to see if we can achieve it, or on the contrary, quickly lose patience and end the exercise before completion. Naturally, each one of these factors can influence the amount of time dedicated.