That is too funny ... I just finished unpacking my own oils today too (same as yours, except I substituted Rice Bran for Wheat Germ this trip)
Yes, that is exactly what I do: 1) take a clean, empty gallon water jug and dump 3 equal parts of each oil into it and mix, then 2) pour a smaller amount of the mix into an empty 20oz water bottle to ration (easier & weighs less than wielding a gallon jug).
And, yes again, I eyeball about 2 tBsp per dog ... 3 days on, 1 day off usually.
You're welcome ... and I know they're loving you for it
Jack