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5-Year vs 8-Year Age Gap (Eldest Has ASD) — Looking for Experiences

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Twinklinn · 28/02/2026 12:54

Hi everyone,

I’d really appreciate hearing from parents who have either a 5-year or an 8-year plus age gap between their kids — especially if your eldest is on the spectrum.

Our oldest has ASD, and we’re trying to think carefully about what kind of age gap might work best for our family. I go back and forth a lot.

Part of me feels like a 5-year gap could allow them to grow up closer together and maybe develop a strong bond. But I also wonder if an 8-year gap might mean less rivalry, less overwhelm for my eldest, and a more nurturing dynamic rather than competition.
If you’ve been in a similar situation, I’d love to know:

  • How your oldest handled the transition to a sibling
  • Whether there was jealousy or increased behavioral challenges
  • If they play or interact much
  • Whether the larger gap helped with maturity and understanding
  • If you’d choose the same spacing again

I know every child is different — especially with ASD in the mix — but real-life perspectives would mean a lot.
Thank you so much for sharing your experiences 💛

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