First make a rough schedule of your preparation.
Watch videos and make your own notes. It’s really tempting to buy the printed notes because we feel it will save time. But the time you take to write your own notes is really worth it. I bought the printed notes but ended up writing my own notes again for almost every subject. I would suggest you to start with the basic subjects and give a good amount of time for them. Then do the clinicals and short subjects at the end. The other way you can do it is systemwise. Whatever it is give enough time to understand the concept.
After watching videos and making your own notes, you can solve the Qbank of the same topic. But marrow’s Qbank is too much time consuming (I personally feel it’s not worth the time it takes). So just go through the explanation briefly and understand how you can get to the answer. Don’t plan to copy all the explanation to your notes as that would make it very difficult to revise your notes at the end.
You may take a subject wise test at the end of each subject preparation, but I don’t much recommend it. Rather focus on the grand tests. Grand tests in marrow are really good. Take them when they are live. We all think we can start taking grand tests when we are done with all the subjects, but the fact is that we are never prepared enough. So start taking the grand tests asap. The results may be depressing in the beginning. But taking grand tests very early will let you not hold on to a single subject for weeks (as grand tests remind you that there are 19 subjects, not just one). It’s important to finish all the subjects than doing a single subject perfectly.