Add the option "-initTime <SECOND>" at the end of each command as follows:
ConfigureMonitoring -getTargets -monitoringAppName myTest -user user1 -pw user1 -domain adminDomain -targetDomains "hawkDomain1,hawkDomain2" -initTime 5
ConfigureMonitoring -upload -mar myTest.mar -user user1 -pw user1 -domain adminDomain -targetDomains "hawkDomain1,hawkDomain2" -initTime 5
This will reduce the initializing time to 5 seconds.