Hi Taiwo,
Thank you for your question. The resource for this is included in module 4.
The CAA mentions the following;
When travelling east the day will be shortened and if more than two hours are lost, it may be necessary to take fewer units with intermediate or long-acting insulin.
When travelling west the travel day will be extended and if this is more than 2 hours it may be necessary to supplement this with additional injections of short-acting insulin or an increased dose of an intermediate-acting insulin.
The direct link to this is;
https://www.caa.co.uk/Passengers/Before-you-fly/Am-I-fit-to-fly/Guidance-for-health-professionals/Diabetes/
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