[TeMPOraL]

> Most parents don't really understand what we are dealing with since their kids sleep much longer (2,3 hours more).

That is true. Our 2.5 y.o. had a period of a couple months in which she refused to sleep more than 8 hours a day. That took a huge toll on all of us. Even now, she sleeps less than she's "supposed to". And of course, when we tried to consult with other parents, nobody could offer any useful advice (and we even asked widely, i.e. in local Internet groups for parents), as apparently everyone's problem is worrying that their kids sleep too much.