certificate from short-lived Private Certificate Authority

[lemon-es]

What I'm trying to do with cdk is to create a certificate for a domain in a private hosted zone with a short-lived Private Certificate Authority.

I'm trying to create it like this:

acm.PrivateCertificate(  
    self,  
    "PrivateCertificate",  
    domain_name="my.internal.domain",  
    certificate_authority=self.private_ca
)

When I deploy this, I get an error at the command line: "Certificate was in FAILED status, failing creation".

When I find the event in CloudTrail, I see that it tried to set the validity of the certificate to 365 days, but the maximum validity for a certificate from a short-lived Private Certificate Authority is 7 days. I cannot find anything in cdk that would allow me to set the validity to a shorter time so that it will work with this certificate authority.

How can I create this certificate with cdk?