There is a 'well known' association between strict low carbing and sleep disruption.
I say 'well known' because the only place i have seen it was when someone (possibly
@Indy51 , since she is a font of amazing info) pointed me at non-diabetic low carb forums.
From what i read, these low carbers were saying that several months of strict LC may result in lighter, shorter, or disturbed, sleep. There was much debate on the solution.
Some said that the benefits of lc outweighed any piffling sleep issues.
Some said that a small 'dose' of carbs at bedtime would act like a sleeping tablet.
Some said that a small portion of carbs with evening meal would eliminate the problem.
Some gave up on lc completely, since the lack of sleep made their life unbearable. The wimps.
I would speculate that if carbs do act as a soporific, then we may be actually needing less sleep if we don't eat them. Is it possible that we only need 8 hours when carbs drug us into unconsciousness, and that our sleep requirements shrink without the carbs? Do your current sleep pattern cause you sleep deprivation? If not, then i would just enjoy the extra reading time that lc has given you.
On the other hand, if you are blundering through your days like a sleep deprived zombie, then a few tests and behaviour changes might help...
I was experiencing some quite tortuously bad sleep at the time i found all this info out, but mine turned out to be a self perpetuating pattern of waking up at certain times - and a herbal sleeping tablet every few days for a couple of weeks broke the pattern. Which was a huge relief.