FAA system 61.57
Instrument is good for life. If you want to exercise the priviledges of your instrument you need to do 6 approaches, holding procedures; and intercepting and tracking courses with navaids in the last 6 months.
If you are not current well then you do an instrument proficiency check with a FLIGHT INSTRUCTOR, not transport canada.
The costs and availability of examiners is uncalled for. Seems to work in the states things should change and not be so complicated and costly for pilots in Canada to maintain a rating or licence.
Good lobby direction for CAAP.
My two cents
