I think you have possibly misunderstood your ability to sponsor someone once you are a PR living in Canada:
https://www.canada.ca/en/immigratio...ship/spouse-partner-children/eligibility.html
Read the section titled "You may
not be eligible to sponsor your spouse, partner
or child if you...".
I highlight this because the section above this says you must wait several years to sponsor a spouse if you were recently sponsored by a (different) spouse. To sponsor your child, the waiting period does not seem to apply.
So you would seem to have at least two options: declare her as non-accompanying and then add her to your own PR application prior to your landing (she would be sponsored by your spouse) once she is of age,
or, declare her as non-accompanying and then you could sponsor her after she reaches 18 years of age (as long as you are at that point already a PR living in Canada and other general restrictions such as criminality).
There are many more details and nuances but in some respects it seems starting your own application earlier would give you options without taking many away.