IMO not worth it, your better off smoking those, but if you were going to throw em away I guess it can't hurt I just don't think you'll feel anything.
First off you typically need a bit more weed when you consume vs smoking:
Smoking --> lungs -->blood stream
Consume --> stomach --> stomach acid --> blood stream
I know it is VERY basic and not exact but you get the pic. This is your first issue, you probably just don't have enough.
Next 40 proof or %? either way it is a bit low. I'm not saying it won't work, it will, just you will need to make it seep longer. Think of the alcohol as a solvent and like most solvents the more you water it down the harder you have to scrub to clean a surface with it, right? Same idea with the tincture, the higher the alcohol content the faster and easier to extract thc, it should be at least 80+ preferably over 100 proof. Most people don't care for the strong hemp taste it will leave, this is due to the taste of the chlorophyl, the longer you let it seep the more chlorophyl seeps into the mixture along with the THC you are trying to extract. If you had a high enough % alcohol and a high % of THC you theoretically could just wash your bud or plant material with the alcohol
and get a tincture that gives you affects with a lighter taste, I haven't tried this but my research on the subject tells me it can be done.