Yes you can evaporate off any amount of alcohol you’d like. The end product will have the same amount of thc left. curious why you want to add MTC… for flavoring? There are so many things you can make with a concentrated QWET!
Here is a link to Blackthumbbetty’s CannaKitchen thread. She is most awesome!🍯 blackthumbbetty's Cannakitchen🍫 - #123 by blackthumbbetty
EDIT: I can help as well. Are you strictly looking for a sublingual tincture? I just made a batch of 100 gummy bears and each has 25ml of THC… same with my chocolate bars. It’s super easy to figure out how much tincture or wax to use so you dose properly!