just post a query on e sahayta stating that you cease to be in emplyment and update ur status to full time... ur COP status will b updated in 2 days...
The C.A. must be in Industry or Practice, any one of both continuosly for 5 years at any time. Then only CA will be prefixed as FCA. After completion of 5 years we have to inform to ICAI to register the member as FCA.