You didn’t lose an hour. You gained an hour. There were 25 hours in the day today.
If you always get up at 9am, and you got up at 9am today, you would have had an extra hour of sleep. There were two instances of 1am this morning. It went 1am to 2am, then the clocks all went back to 1am again and did that hour a second time. We had an extra hour. You haven’t lost anything.
If you put your kid to bed when the clock today said 8.30pm and then you wake him up tomorrow morning at the same time you woke him up last Monday morning then he will have been in bed asleep for the same number of hours he has been in bed asleep every other night.
The country has not removed an hour from the day. The time on the clock is the time on the clock, the same as it has been every other day of your life. The number of hours between 8.30pm tonight and 7am tomorrow is the same number of hours as every other night.
Last night, there was an extra hour. Today was 25 hours long. You feel tired because we’ve shifted. Not lost. Just shifted back. Right now it is 11.30pm but you are tired because your body will think it is actually half past midnight. It doesn’t matter, you just need to get used to the slight change. You have not lost an hour. If you go to bed at the usual time and get up at the usual time, you are getting the same number of hours of sleep. Just moved back an hour.