There is no such thing as an FI(R) certificate; it is simply an FI certificate the privileges of which are temporarily restricted. There is nothing in law to prevent the holder of any FI certificate from adding additional privileges but FCL.910.FI prohibits the exercising of those privileges until the experience requirements are met.
In the OP's case, as well as renewing the FI certificate it may well be worth obtaining separate IRI and CRI certificates as Whopity previously suggested. Renewal of the FI certificate will allow 5 hours credit on the IRI course flight training element, in addition to the 25 hours teaching and learning credit.