Is your husband himself compliant with his residency, 2 years out of last 5 years given until he is compliant he could not sponsor you again for PR, PR card expiry date is not relevant to anything other than need a valid card to travel to Canada.
Health issues as a reason for not meeting the residency obligation can be a 50/50 chance of suceeding with an H&C reason although if the medical event occurred when you were you were already out of compliance or close to being out of compliance the odds start to reduce.
There is no way of course for anyone to predict whether a PRTD application would succeed given in filling out the form it becomes obvious if someone has not met the residency obligation .
Nothing to stop you submitting a PRTD application though along with any supporting H&C documentation in support given renouncing your PR status should be the last resort. WIth COVID maybe be prepared for a PRTD application to take some time, although never has been a published processing time even pre COVID suspect times are more unpredictable.