Advice on working with large JSON schemas

I have converted a large XML schema to a JSON schema, and it seems to have worked quite well (Impressive!). However, the JSON file is approximately 650,000 lines which makes it unwieldy. I am wondering if there are things I can do to reduce the size of the generated schema, e.g. eliminate of "propertyType" and "elementName" items that I believe are optional information annotations? Any tips on working with large JSON data structures would be appreciated.

Thanks. Peter