To add that if you do decide to do a short landing to activate your IEC you must still meet the conditions. Full insurance for the IEC term for your country, 2 years and proof of access to 2500 CDN. If you do not have full travel insurance for the term allowed for your country you will only get a permit that matches your insurance term. Also you need to ensure your travel insurance provider allows for home trips so that you do not find it is voided should you do a quick activation trip.
As Scylla says use it or lose it.