Yes I have heard that before but my therapist and I did not modify it and it worked very well for me and my DID.

IFS approaches treatment in a way that is already self led, so theres no reason to "modify it" the answers are all with in each persons own mind.

example...

IFS session begins with doing a meditation. any meditation that brings the one doing the process to being their self mode of feeling the 8 c's (creativity, clarity, caring, compassion, courage, calm, connection and curiosity)

Then after a person is in self mode they pick a trailhead or part to work on. the choice is their own to decide.

then while still in self mode the person works with the part and on the trailhead (problem / issue) that they want to work on.

the work being done is through a set of questions, answers are all individualized. no two people will have the same answers

session ends by thanking the parts for talking with the person doing the IFS process.

its already totally individualized, no modification is needed. and no modification was needed for me and my therapist.

IFS is a self therapy program and therapy technique. and as such theres no right or wrong answers.

there is a right and wrong way to do it, by that I mean you dont jump into doing it with exiles with out first doing the beginning work.

example I did not jump right in with my therapist working with an exile that held trauma memories with out first learning how to stay grounded in self mode. first I learned what self mode was and how to know when I was grounded in self mode. working with exiles came much much later after we did the IFS work with all the protectors, and obtained permission from the protectors to work with the exiles.

my therapist and I did not modify any of the process for my DID or other dissociative disorders that I had/ have. we didnt need to because IFS is already individualized kind of therapy.

we have a saying here where I live ... the answers are all with in yourself.

that saying applies to IFS. my doing IFS is automatically going to be different than my wife doing her IFS. why because she is not me and Im not her. her parts are going to be different than my parts are. what makes her react with emotions is going to be different than what makes me react with emotions.

the process is the same no matter what. but whats put into it (the trailheads aka problems to be worked on, parts to be worked on ) and out of it (solutions and work done) is different.

no modifications were needed for me and my therapist even though I had DID.