"In order to"
Can I say in English "in order for hem to get ready...?
in order for him to get ready...
Yes, you can. Here is a good example of how to use such a phrase.
In order for him to get ready, he will need to wake up.
You could also leave out the "for him" and simply say...
In order to get ready, he will need to wake up.
Hola graci, bienvenida al foro
Hmm, si nos pones la frase completa....
In order to get ready...sería: para arreglarse, depende del contexto