I"m responding to you as your the most recent one but there's other mentions above as well, how do you stock extra pots at the camp? Doesn't it just load up a default set for the mission which is like 4 First Aid pots?
Overall it sounds like i should carry more stuff regardless as I try to leave open the bottom row to pick up more mats as I run by them but that's probably overkill.
Go into the tent and you can access your full inventory and restock all your stuff.