Measuring out portions again and putting them in a Zip-Loc bag gives you a method of carrying enough for several days. It helps to write the proportion of water to mix on a small piece of paper and placing it inside the bag. It is now possible to find decent drinkable coffee in bags just like tea. However, instant coffe works just as well, and again, reduces the paper waste that needs to be disposed of either by carrying out or by campfire. Cremora is an acceptable creamer for your coffee and in some areas can be found in single serving packets.
Lunches can be interesting.
For lightweight bread substitute crackers such as Wasa Bread or other crackers. These also have the added advantage of not getting stale as fast as regular bread. There are many types of cheeses that do not need refrigeration, as well as small packs of genoa salami or pepperoni. Peanut butter can be put in squeeze tubes, as well as jams or jellies. It puts a nice finish on a meal and feels very luxurious.