Sounds like you need to do a Reuseable receipt, which covers each entry into Canada.
COVID-19: Use ArriveCAN to enter Canada - Canada.ca
Reusable receipt
As a vaccinated essential traveller, you can save time by creating a reusable receipt.
Enter your information once and reuse your receipt for each entry into Canada.
You're no longer required to enter information about your port of entry, or date and time of arrival.
If you previously created a reusable ArriveCAN receipt, you must download the latest version of the ArriveCAN mobile app or sign in to the web version. You must re-submit all of your information, including the newly required information on proof of vaccinations, to get a new exempt reusable ArriveCAN receipt. If you don't submit the required information, it can cause more delays at the border. It can also lead to fines or enforcement action.
Apart from this requirement, you may only need to resubmit your information if the border services officer determines that:
you're not travelling for exempt essential travel
you're travelling for non-essential reasons (for example, discretionary travel)
your information in ArriveCAN changes (for example, your travel history)
