If the ARC date pattern is to be maintained, can airworthiness review be initiated before 90 days before expiry

No, you can't. 

If you want to maintain a date pattern, the airworthiness review can only be started 90 days in advance, according to the M.A.901(n) or the ML.A.903(d). 
 
This advance period applies to both the physical review and the documentary of the aircraft.