Sophie Brouillard - Change of birth date

Hi. @Thomas Edward Fary @Byron Jason Whitesides
My information is not from a Church paper, it is from family paper.
I have a birth date of March 25 (same year). I don't want to unilaterally change it on everyone seeing I cannot produce the proof. (20 years of works).
Could you kindly let me know if you're okay with me modifying the date?
I might have other suggestions based from my French direct relatives source for other member on the tree. Let me know what you would like me to do so we get the information out there.
Thank you.
Isabelle