So \I applied for Child tax benefit back in may when we arrived in Canada , I am a Canadian citzen and my wife is not , I am sponsoring her , we are receiving the the child tax benefit since last year , both my wife and I filed our taxes in 2017 , do we need to apply for child tax benefit again , or is the first application fine , since we did out taxes already , we will continue to receive the child tax benefit , no need to apply again?