Again:
-once IRCC issues a visa (eg the trv for your spouse and child - if of course they do), border services rarely challenges it unless there is some explicit reason to do so. Even you being out of compliance would not really be a reason to do so (IMO), nor would there likely be notification in THEIR (your spouse's) computer record of YOUR issue. Being out of compliance does not automatically trigger a process to strip PR status.*
Don't overthink it. Not having accumulated the 730 days yet is NOT the same thing as 'not meeting the RO.'
Now the most important:
-if you have done your arithmetic correctly, you are compliant with the residency obligation. You are 'close' - if you leave for eg 12 days you could fall out of compliance - but for now, you are in compliance. (Try not to fall out of compliance! It will make things easier!)
-The representation people have in their minds of 'meeting the RO' (i.e. getting to those 730 days) is basically wrong. There is in compliance and there is not in compliance.
-If you are in compliance at the point your spouse arises, there is, essentially, nothing for them to challenge. (even if you were out of compliance at the point they cross the border, it's pretty unlikely that only being out of compliance would cause an issue for them - don't get lost in the technical weeds)
-To extent IRCC is actually checking your physical presence/RO compliance at this point - that is checking. It's very different from a finding that you're out of compliance, and even further from anything triggering loss of PR status.
* This gets into the weeds a bit, but: the distinction I'm drawing here - somewhat simplified - is being 'out of compliance' (arithmetically, let's say) vs a formal finding that the PR is inadmissible /due to not complying with the residency obligation./ The latter requires a process, including an appeal, where 'other information' than just arithmetic compliance is considered. Point being: when a PR becomes arithmetically out of compliance, they are STILL a PR. Nothing happens automatically - although they could and perhaps do in some contexts 'set a flag', the individual is STILL a PR and are not 'in trouble'. IRCC cannot strip the status without getting more information, being examined, the PR having /some/ opportunity to respond (give reasons that constitute evidence they are compliant by other means - leaving out detail for such reasons here - and/or have reasons that should be considered for compassionate consideration), usually possibility to appeal, etc.