That is,
once daily = 24/1 ----> every 24 hours.
twice daily = 24/2 ----> every 12 hours.
three times per day = 24/3 ---> every 8 hours .
four times per day = 24/4 ----> every 6 hours.
If the child sleep already, no need to wake him up for the medicine except high fever.
Wake up, give him one dose of medicine.
Before sleep, give him one dose of medicine.
In the daytime, separate evenly for another one or two doses of medicine.