For the forum itself, a few links to migraines caused by too much sleep. I suppose that the solution would seem to be just making sure that you don't oversleep and to keep a regular schedule of going to bed and waking. I'm not sure the implications for oversleeping with a migraine in progress.
Please see the quoted text below the link. Looking over the first link, it's pretty comprehensive on triggers as in general. www.migrainetrust.org/factsheet-migraine-triggers-10505
The complex nature of trigger factors is illustrated by sleep. Both too much and too little sleep
can be implicated in a migraine starting. Some people find that sleepless nights, a number of late nights and being over tired can trigger a migraine. Other people find that sleeping in or dozing in the mornings has the same effect" www.mayoclinic.org/diseases-conditions/migraine-headache/basics/causes/con-20026358
"Missing sleep or getting too much sleep
may trigger migraines in some people, as can jet lag."