Since you are only allowed to file one tax return per year, you should always wait until you have all of your information prior to filing. Both of those T4 slips should have been included in your return.
In your case, since you've already filed your return without all the proper details, there's a very good chance that your refund will be inflated or at least incorrect.
Luckily it's fixable! You will need to file an adjustment request once you have received your Notice of Assessment. Here's how:
https://turbotax.community.intuit.ca/replies/2647992
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