Update README.md

Author: baileympearson

source/client-side-operations-timeout/tests/README.md

@@ -607,7 +607,8 @@ Tests in this section MUST only run against replica sets and sharded clusters wi
 This test MUST only run against server versions 8.0+. This test must be skipped on Atlas Serverless.
 
 Depending on how long the server takes to execute each batch, this test may be flaky.  Drivers MAY override the value of 
-`maxWriteBatchSize` to ensure the server consistently executes batches quickly, reducing the flakiness of the test.
+`maxWriteBatchSize=1` to ensure the server consistently executes batches quickly, reducing the flakiness of the test.  
+Drivers MAY also modify the test to use two small write models if specifying `maxWriteBatchSize=1`. 
 
 1. Using `internalClient`, drop the `db.coll` collection.