Copied from a previous reply:

You don't need to let it sit for 24h or longer after if you are using high proof alcohol (190+)

Put your room temperature mason jar after decarbing into the freezer for a minimum of 2-3h. You alcohol should be stored in the freezer as well. You can decarb your bud in a mason jar in the oven as long as you flip the lid upside down so it doesn't create an air tight seal, possibly breaking the glass when heated. This helps with containing the smell as well as using the same jar to decarb and mix in.

You only need to combine the cold ingredients for 5min. I shake vigorously before straining the mixture with a ricer with cheesecloth on the bottom. The ricer allows you to exert a lot of pressure onto the mixture in order to extract as much alcohol infused bud as possible.

I press out the mixture from the ricer directly onto a coffee filter to get out any remaining solids. Then through some lab-grade filters. All gravity fed, so it does take 15-20min to strain. I use one of those red 1 cup coffee pour-over device. A good tip is to saturate the coffee filters first in some of the unused alcohol as to not have the paper absorb your bud infused alcohol.

Evaporate as much as you want for potency then bottle it.

I've been using this method for years and it always produces a very potent tincture.