At seven days old? Yes. Whatever works for both of you. In a few months' time if you decide that you don't want to feed to sleep (I have done with both and haven't had an issue but if it's not for you) then you can maybe encourage a bit of feed-play-sleep cycle. But in my opinion, you and bub know best and a nice warm full tummy and a body full of happy hormones is relaaaaaxxxxxing!