Implement a mechanism to auto-tune resharding parameters (specifically reshardingCollectionClonerBatchSizeCount) based on the collection size, number of documents and average size of the documents before starting the resharding process. Increasing the number of docs from the default (of 100) in cases where a collection has smaller sized docs can result in a faster cloning phase. Refer to  https://jira.mongodb.org/browse/HELP-92525, for more details.