I don’t think there is enough clarity to provide a recommendation. You can find interesting facts on the Transitioning from Relational Databases to MongoDB in the linked blog post. Please note also the links at the bottom of this post, and the referenced migration guide .
There will be not the one and only answer. Your schema highly depends on how data is accessed. One rule of thumb is: that data that is accessed together should be stored together. Bases on this you will first need to evaluate your access pattern, define the most important queries, find relationships, define patterns to use. We need to take into account data durability and staleness at this point as well as cost of maintaining duplicated data / indices vs. fast access.
I highly recommend to take some of the great and free classes from the MongoDB Univerity resp. some documents on this subject:
When you still feel unsure after visiting the mentioned docs, feel free to provide some sample data and what you want to archive. I am pretty sure that we, as in the community, will find an answer.