How to best structure this data structure to avoid hitting index

Hi, I am working on setting my company’s course catalog index and here is the data I have so far: As you can see, the credits attr has quite a large amount of data as each course has credits attached and breaking down by profession state and each state can offer multiple credit types and each credit type can link to multiple credit categories. I currently hit the roadblock of index size too big since courses often times can have more than 50 profession credit states. I did try to follow th

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