Database
[{createdAt:"2022-01-01",updatedAt:"2022-01-02"},{createdAt:"2022-01-01",updatedAt:"2022-01-04"},{createdAt:"2022-03-31",updatedAt:"2022-04-02"},{createdAt:"2022-06-30",updatedAt:"2022-07-01"},{createdAt:"2022-06-30",updatedAt:"2022-07-02"},{createdAt:"2022-06-30",updatedAt:"2022-07-03"}]
Query
db.collection.find({"$expr":{"$lt":[{"$dateDiff":{"startDate":{"$toDate":"$createdAt"},"endDate":{"$toDate":"$updatedAt"},"unit":"day"}},3]}})