[AL-MEHDAR]

For ICAO CAAP you have to renew it yearly

but

for FAA you have to be current for last 6 months
I mean u have to flown minimum 3 takes-off & landing with under instruments for last 6 months
please FAA guys this is the rule and I am surprised that u don't know the rules
simply u have to know these information before u pass the written exam

open the gelims instrument book
the chapter 4 or 5 I think its for FAA regulation

take care and fly safe

regards