I’ve started making flavor bases for my favorite recipes. You’d still have to mix, but you could pre-mix your nic base and set all your recipe bases to be the same % so that you’re adding the same amount to everything every time. A little more work on the setup, but it’d save a lot of time and effort only having to do two ingredients per bottle.
To make a flavor base, go to the recipe and click the blue wrench, then click “Make flavor base/oneshot”. At the bottom of that page is a place where it says “Desired mixing %”. You can increase that to whatever % works for all your recipes and the calculator will have you add PG to your base to make them all the same. With your nic, if you don’t already have a premixed base, you can create a single flavor recipe (pick a random flavor) at something like 500ml with your normal desired strength, PG/VG ratio, and then whatever % you decide on for your flavor base. Then just mix together the PG, VG, and Nic at the weights it says and leave off the flavor. Whenever you want to mix a recipe, just make a single flavor recipe (again random flavor is fine) at whatever amount you want with your flavor base %. The recipe has the total base grams so use your premixed nic base at that amount, and then use your flavor base at the amount it tells you to.
Hope that all makes sense. LoL.