OP - I am sending you a un-mnetty hug! I remember those days and really don't want to sound either patronising or condescending. Keep your post, you will look back and smile.
He is 7 days old and doesn't have a name yet. He doesn't need a routine, I promise you!
He just needs to feed whenever he likes every 10 mins or for 3 hours as you say. His activity is just being out of the womb - 40 weeks of being inside where he was nourished constantly and kept warm and he is now out in the big wide world.
Just give up on normal life for a while, try and enjoy it and please don't get teary about routines. Your hormones are all over the place - your only job is to cuddle up in bed with him, get other people to feed you and then feed him, look at him, enjoy him and accept the lack of control that you will have over life for a while. It is a unique time that I felt overwhelmed by with dc1 but just accepted (and therefore enjoyed) with dc2.
The expectation that a 7 day old should be in a routine is setting impossible demands upon you and also him. Repeat after me, he is a week old.....
Take care and good luck with it all x