I tried to turn on sleeping, but the night come and I suffer from the usual tick lag, so I turn it off, and when I visit my chicken coop at noon the next day, I see them, still sleeping

MC 1.12.2
Animania 1.6.2
SSP

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Not only those two, but the test of them were day sleeping too

If you turn off sleeping while they're sleeping, they won't wake up. Punch them to wake them up.