Hi. There seems no time frame for elderly people. I am 74 years old, application received by IRCC on 8th Feb,2019, Showing IP since 16 May 2019. I have asked about status of my application, I was given a routine reply that all security and background checks complete, and you are in queue for interview but no letter received so far. Infact our GTA has much backlog because of flood of applications, whereas my friend in Calgary already become citizen last month though applied in May 2019.