I've got this one story, which for reasons I'm not going to get into right now, has to be in 1st person from a certain character's perspective. But I have an idea for an opener to the story which would be in 3rd person limited from the mother of the MC's perspective. Would it be too jarring to have the very first scene be in 3rd person limited for one character, then have a time-skip and change to 1st person perspective of another character? Basically, the opener will be when the kid is a preschooler and his mother is noticing that he seems strange and describing this to another mother. Then I'll switch to the kid in school around grade 2 or 3.