Interesting that DAFNE reckons not much point to post-meal testing. I would go further, and say it's actually unhelpful to do post-meal testing. Every time I've tried to do it I've ended up over-correcting and getting into a horrible hypo/hyper swinging battle which has made me feel ill.
Don't forget diabetes is a marathon, not a sprint. Part of controlling it is finding a way to actually live comfortably, and happily. Interrupting sleep... no.
When I was still learning the basics of how to balance my diabetes and was testing till my fingers were painful, a diabetic diabetes nurse gave me a very good piece of advice: you don't need to test all day every day. You can give yourself a break and test through the week, like a sort of audit. Eg test at breakfast on Monday, lunch on Tuesday, dinner on Wednesday, nighttime on Thursday. In between, if you have a specific "question" (like am I going hypo, or did this insulin dose change work) then obviously you test that. But the 'audit' approach really enabled me to see patterns and allowed me to relax a bit, without damaging the overall control.