Hi all, I was trying to use my cooking pot + gas stove + gas canister for the first time but I am clueless on how to actually detach the gas stove from my cooking pot. They are currently connected with each other and from what it seems, at this state I cannot fill the cooking pot with water (the item itself gets named with gas stove). I am able to combine and detach the gas canister from the combination of cooking pot + gas stove normally though. What am I missing here so that I can disconnect the gas stove from the cooking pot?