Hello Ryansmum,
I am a teenager's mum, and like you I find any changes in routine to be a nightmare when controlling my son's BGs...this includes summer holidays, and even weekends. My son was diagnosed last year. During holidays my son wakes up late (around 12ish ) and goes to bed late too. His breakfast, lunch and dinner timings also go haywire! However, being on a pump gives us the flexibility to cope with such routine changes. Is your son on a pump too?
My experiences so far have taught me the following :1) basal/bolus ratios are important to keep in mind...with most teenagers (I have read) a 50% or 60% basal works best, esp. if they tend to snack a lot...however you must see what works out best for your son. My son was on a 40% basal (40% of TDD). But increasing his basal slightly (now 50%) has worked well for him. 2) Any changes in routine is likely to upset the basal routine set on the pump. e.g. my son needs more basal on a weekend and during holidays. However, when basal increases then it also has a spill over effect on bolus, i.e. his ratios need tweaking too. e.g. On sundays he needs 30% more basal, so his bfast and dinner ratios are 1:8 as compared to weekdays when they are 1:10. Even holidays can be divided into active(when he goes for some activities/camping, etc.) and inactive holidays (primarily staying at home). So we have 7 different basal profiles. 3) Growth, puberty, hormones can all play havoc with BG control....So, I have found that I need to tweak my son's basal doses sometimes as frequently as every 10 days...if we get past 3 weeks without requiring any changes, I find that very lucky!!! So, in a nutshell, during teenage basal requirements are quite erratic.
Amidst these problems I have found the following to be extremely useful as these foods are quite gentle on BGs (however, you must test and see how they affect your son):
Brown Basmati Rice, Pearl/pot barley, quinoa, eggs, chicken, turkey, prawns, rye bread, Burgen linseed bread, spelt pasta/spaghetti, Lots of veg., sweet potato jackets, and cheese and nuts.
Hope this helps! Best Wishes.