I'm curious what childhood may have been like for you, specifically the earlier years (say under 9). Did you experience yourself as being very sensitive to discipline or criticisms? Were you painfully shy or did you find it easy to be around others? Did you have a marked love and interest towards animals, nature, going on adventures, music and art? Did you love reading? What was your favorite things to play or do? Were you very well behaved or kinda wild? Did you feel a strong belonging in your family unit or with friends, or more of an outsider vibe? Did you enjoy being in a school or was it absolute hell on your Fi?
Feel free to respond to all, some or none if it's easier to chime in with whatever you'd like to share. It'd be interesting to see if there are any stronger trends to any of it.. though enneagram likely plays a big role here. I can find tons of info on many of the other types, not so much on ISFP though (surprise surprise hah). It'd be great to hear from you.