I’m so hungry!!! Am I doing this wrong?

Just started FODMAP a few days ago and I’m just struggling so much with staying full. I’m wondering if I’m just misunderstanding when and how I’m supposed to be eating.

From what I’ve read, I’m supposed to take 3-4 hour breaks between meals to allow the migrating motor complex to activate (I’m treating SIBO). But I’m starving during this time. Am I really not allowed to even snack on some low fodmap foods like peanuts during this time? Am I supposed to stuff myself during meal times to tie myself over for the next few hours? Or am I just misunderstanding how to do this diet? I’m also trying to be very strict with portion sizes to avoid fodmap stacking so that’s not helping my hunger.

Thank you in advance to anyone who can weigh in on this!