You can ask your partner for food and firewood. When you have 40% or less, tell her or him to get food or firewood.

Aside from the things your partner can make when you give her things, such as food so she can cook, vine so she can make rope, etc., you can also talk to him or her and have them get you food or firewood. Having them get food is very useful in the beginning of the game. However later when you can fish this becomes unimportant. Using them for firewood helps throughout the game because with everything you have to do, taking the extra time to gather wood can be very annoying.