Thanks all for your hugs and kind words!! He was the first to fall sleep at daycare, for a change, and even with a nap, they told me that he was crying for nothing because he's just tired!! Put him down at 8 and took him forever to fall asleep, crying, calling me to stay with him, etc. So with the nap, his whole day is only 10h30! He did wake up at 8:15. Not sure if this late wu would shift the whole thing a bit and let him catch up!
KM read on probably raising boys that teenagers do sleep because hormones get them to not be able to go to sleep early, hence not be able to get up early to school. So some sensible schools implement slightly later time for higher grade students and everyone got happier! I would certainly be happier if I got more sleep.
Sleepy vibes for all