Your status will expire after a year but you still have a valid account. Your account will lapse after 3 years if there is no activity.
From the website..
KrisFlyer accounts which have activity/transactions are valid for 36 months from the end of the month in which the last mileage accrual occurred, after which the membership accounts will expire. KrisFlyer accounts which do not have any activity for a period of 18 months since enrolment will expire after that period of 18 months.