Set up as many program lengths as you like (program 1, program 2, etc). Then say to alexa "delay me program 1 for 7:00am"
More phrases ...
"Ask Delay Me to set program 3 to 2 hours" "Ask Delay Me to set 300 moments for program 5" "Ask Delay Me to set program 5 as my favourite" "Ask Delay Me delay for 7am" "Ask Delay Me finish program 5 for 9pm" "Ask Delay Me finish time" "Ask Delay Me start program 3 now" "Ask Delay Me usage" "Ask Delay Me to get settings"