I'm one of the few that just vape the same old thing day after day.my question is, what ever the flavors you mix(how much) I'm relearning how long a liter can take to vape.
it really depends on how much you vape..
I made 440 ml of my favorite juice a few weeks ago and 100ml is gone already - but in my defense I started vaping it prior to it being done steeping.. haha
I generally keep around 800-1000 ml mixed because my mixes last well, and I dislike constant mixing.
Other people really enjoy mixing a lot, and prefer to mix smaller batches more frequently.
You sound like your more similar to a mixer like me, so a liter of mixed base (vg, pg, and nicotine at your preferred concentrations) and then enough recipes (flavors only) separate and only mix flavors and base together when you start running low (like DIY one shots) until your settled in how much it takes to keep you going for 6-8 months at a time of vaping.
hope you can understand all that... haha
basically what your doing is making one shots that take a little less time to steep... and avoid mixing large amounts until you know an accurate use level. I stay on a mix once every 6-8 month course when possible.
you can adapt any ejuice recipe you have to 100% flavor for use as a one shot, and then mix it with your base at whatever percentage you prefer (5%, 10% etc) when your closer to actually needing to use it.