Can i perform camel cat exercise 12 weeks after microd with hemilaminotomy ? i don't have any pain while performing this exercise.

Yes, by 12 weeks : After your type of procedure you can resume all exercises if you have no or minimal symptoms but you should use correct posture & gradually build upon your activities while ideally limiting or avoiding certain ones like free weights in terms of deadlifts and squats. Golf & racquet sports can be initiated once your core strength & flexibility has been restored but let your surgeon guide you.