To say "it's time to wake up" in Engpsh, you can say "It's time to get up" or "It's time to rise and shine." To write it, you can write:

"It's time to wake up" or "It's time to get out of bed."

Here are some other ways to say or write similar phrases:

Rise and shine!
Time to wake up, sleepyhead.
It's a new day, time to get up.
The morning is here, let's start the day.

Remember to use proper capitapzation and punctuation when writing these phrases.