We live in Vancouver, Canada. We will be traveling back to Europe (Belgium) end of September.
Our little boy, Matti, is 11 months. He has been cured following GNS 4 months ago.
I have read a few posts discussing this matter. Our case is slightly different as the time difference is not 1 hour or even 6 hours, but 9 hours.
We already flew back when Matti was 3 months old. We didn't know about the GNS at the time. People kept telling us that he would adapt himself automagically. It didn't happen. We ended up living in Belgium following the PST timezone for 3 weeks. Awful.
This time is different as we have the tools from the GNS (and this forum

According to the advice given on p. 233-234 in the GNS book, we should make use of the 15 minutes margin.
A few ways we can think of:
- - We could start the day 15 mins earlier every day. But that would take 36 days to fully adjust him.
- - We could partially adjust him, up to 3-4 hours.
- - Or we don't adjust him at all and we progressively adjust him once in Belgium. We keep him on the PST timezone for the first 2-3 days so that he recovers from the journey (15 hours, 1 stop in Germany).
- - Or we stick to the new schedule. No matter what.
Excerpt from this post:
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If yes, then you hit the restart button and start on night 2 (mini-cure) in the cheat sheet.
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You stick with the schedule down to the minute. No extra naps, no food, no compensation for loose of sleep. It should take you 3 days to introduce and 7 days to manifest.
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Andrew