It is probably a real pain to get it (all) out of the gel caps again, better seems to just use regular baggies or use those wax-paper snowseals then put the enveloped ones in a baggie with 0,5 or 1g each or something. With snowseals the loss is minimal, they are relatively non-sticky. I use them, combined with regular baggies (and/or)... I don't use them always, I am not made of money.
As for solvents, water as well as alcohols and PEG are all protic which means they can ionize tryptamines and produce reactive species sensitive to oxidation reactions. DMSO is a non-protic solvent that comes as close to a universal solvent as we tend to get, it seems you often can reach high concentrations. However, while it is not really that toxic per se, it is also not advisable to ingest copious amounts of it. So you would need to make a concentrated solution that would require ideally sub-milliliter volumes for your normal dosage range, and use a measured 1 ml (1 cc) syringe for relatively good dose control.
You should then also freeze separate volumes so that indeed you don't have to thaw out your whole stash each time. DMSO freezes (i.e. solidifies) even faster (at higher temps) than water.
Going for drops to dose a compound does not tend to be a good idea, in my opinion, unless you take care of some disadvantages / traps.
Honestly, it would be a bit ridiculous though, to go through this hassle to be able to make a solution and dose volumetrically. Especially if you are forced to choose a solvent that doesn't even stay liquid in the deepfreeze anyway.
Why don't you just buy a sensitive mg scale (they can be inexpensive), and store sensitive compounds in solid state?? And for 2 months only even.. (I see those 2 months have passed a number of times by now, lol)