Proper extracted codeine storage

[primal440]

Yesterday night SWIM did a (he thinks) succesful CWE on 17 codeine/paracetamol pills (30/500) and stored the liquid in a small bottle. SWIM is unsure as to wether it is convenient to keep the bottle in his room away from the light and at room temp or to put it in the freezer because he plans on indulging on the codeine far from soon because right now there's more important things to do. What do you recommend? Would it be dangerous to freeze it, as research mostly tells to store at room temp, away from light and in an air-tight container, but he doesnt know how much time will pass and this isnt a syrup or a powder anyways, so it must be a little more fragile structurally speaking. How can SWIM suck up the air from this little bottle (if this is necessary)? Thanks in advance.