I have the same situation with you: 6-year-experience physician received NOI on Feb 6. My CRS is 408, I submitted on 18 Mar and is waiting for my result. Do you have your result yet?
Read all of this thread and realize the processing time on OINP page is just an estimation. Many people wait for 1 or 2 more months before a nomination.
Hope all of us get processed and nominated quickly.