Skip question based on difference between two dates

Hi all,
I have a form that has two dates (One for the “Date of filling the form” and the other is “Child’s date of birth”). In the later part of the form, there is some question that is only for those children who are more than 9 months old. I want those questions “skipped” if the child’s age is below 9 months. Can anybody help me, how can I do this? Thank you for your help.
SAMPLE.xlsx (11.6 KB)

@rehanmaqbul, this post discussed previously should help you solve your issue:

Thank you @Kal_Lam for the prompt reply (always expecting that you will be the first. Bravo). I did not apply your solution to my problem as I have already another constraint for the same question in my xlsform.
Can I have two constraints for one question?

I thought it would be helpful. I wrote the formula @Kal_Lam shared with me in “relevant” and it worked. If you have already some other formula there just insert “and” and write the second formula.

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@rehanmaqbul, :clap: :heart: :partying_face: