Does the worshipper's I'tikaf become void if he leaves his place of seclusion to awaken his family for Suhoor because there is no one else to do so?

The person in I'tikaf should not leave his place of seclusion except for necessities, such as relieving himself, eating, and drinking, if there is no one to bring these to him. There is no harm in him leaving to wake his family for Suhoor (definition) and prayer if they cannot wake up by themselves and do not find anyone to wake them. However, he should not sit in the house after waking them, but rather return immediately to his place of seclusion.