Instant Submit, History Size, and Batch Size

Hi. I have the following settings in my prodigy.json:

  "batch_size": 10,
  "history_size": 10,
  "instant_submit": true,

I set instant_submit to true in order to auto-save documents. However, I am wondering if it is possible to auto-save after 5 documents instead of 1? My annotators would like to see a history of 5 documents before they are auto-saved. Is this possible?