down to

preposition5

1. •
   With no one/nothing remaining but.

   • I'm down to my last few sleeping pills.
2. •
   Within the responsibility or influence of.

   • What type of person you become is down to you.
   • So I guess the cooking is now down to me.
3. •
   Due to; because of.

   • The failure was down to total neglect.
4. •
   Including even the smallest parts.

   • We checked everything down to the last/smallest detail.
5. •
   Ready or willing to (do something specified).

   • Are you down to go to the cinema?