My youngest is 6 . Advice I had gotten earlier was that younger kids don't do well with week on week off.
I mistakenly looked at another posters signature that had older kids. Can you update your signature to include kids age. You can always ask a "professional" for their opinion. We had a family therapist. I weighed his advise extremely high when X and I disagreed.
My youngest was 6 when we separated. She is 17 now. Time flies by.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712