My timeline is somewhat similar to yours
Feb-07-2018 = Application received by CIC Mississauga
March-22-2018 = AOR1
March-28-2018 = Medical Request
March-28-2018 = Schedule A / PCC Request
March 23 -2018 = SA
May-10-2018 = ECAS status change to "In process"
May-18-2018 = Case transfer to LVO...