Well... extracting the weed's THC with acetone, which is a very penetrating liquid, takes about one week to get most of it.
Extracting it with alcohol, a not-so penetrating liquid, takes some weeks, maybe even a couple of months, if done without heating.
And if you tried to extract the THC with oil, a viscous and absolutely not-penetrating liquid, you would have to wait some years until any "decent" amount of THC were extracted if you did it without any heating.

Heating increases several (hundreds or even thousand) fold the speed of dissolution of THC in any liquid. Making Green Dragon (solution of THC in alcohol) can take some weeks without heating, but only one hour with heating, and thats why heating is so important.

Mixing helps a bit, but its FAR less efficient than heating.

When you tried to dissolve the weed in oil, did you eat the oil with the weed in it or you did separe the weed from the oil and ate only the oil?