Just in case you still need information… I am also late registered, but not for that long. I was asked for my baptismal certificate and local civil registry document. As mentioned above, it depends on the officer but if I didn’t have those documents with me, it would have caused delays. I also brought form 137, school ID that I can find when I was in elementary, and even my college transcript of records.
I also had my mother’s name updated since it was misspelled on my original birth certificate. It only took about 3 months then the annotation was added when I requested for copies of my birth certificate before I left for the US.