I'm recording historical data for different items and I've perhaps wrongly decided to store the data in one collection per item as an array of objects ie:

{
    "_id" : ObjectId("616d4e1c1e7edf6e9bcdd668"),
    "collectibleId" : "bc50774d-b923-4a5c-8e5d-f25608e1e80e",
    "1634553373797" : {
        "storePrice" : "39.99",
    },
    "1634554743600" : {
        "storePrice" : "39.99",
    },
    "1634558354739" : {
        "storePrice" : "39.99",
    },
    ...
}

I'd like to know given the above data (key is a unix timestamp) how I could go about fetching all of the data between date A and date B.

Thanks,