When my kid was 1 year old, she was on a sleeping schedule where I would wake her up just in time for me to get her to daycare before heading to my 9am daily standup, and then falling asleep at night at whatever time she would be sleepy as a result of the morning wakeup time.

Maybe I could have planned for the clock change better and done something gradual but, the abrupt way we did it had the effect that she was totally thrown off and could only sleep a couple of hours on each of the two nights following the change.

As luck would have it, staying up with her all hours for those two nights that year left me with a terrible cold that left me miserable and exhausted for more than a week.

I don't know if this answers your implied question or not. But that's what happens to many parents every year.