You certainly don't need any new adventures on top of what you are going through now! I mix by weight or volume, depending on my mood. Before I bought a scale, I bought 100 piece boxes of 1mm, 3mm, and 10mm syringes. And some 30ml syringes but the box cost was prohibitive. And a couple of grad cylinders. So more or less a lifetime supply. The 100 pc boxes were $10-15 each. So if I want 3mm nic, I add 3ml of nic to 97-100ml of zero nic juice. I've actually gotten a little casual about that, filling a 120ml bottle to roughly 100ml (just eyeballing it) and adding 3ml of nic from a 3ml syringe. Close enough for me; I could make it very accurate if wanted to add effort. And I used to, of course.I doubt I'll have cravings and I do plan to reduce pretty incrementally. It's just that I just had extensive mouth surgery yesterday (again, sigh) so I'm not vaping as much, though thankfully, no nasal vaping is needed this time. I'm probably reducing by vaping less anyway. I was going to reduce, but then this stupid infection came up, sigh. I'm pretty certain my vape is variable based on my success with accuracy in mixing, and no, I probably do NOT notice the difference that much, though there was one mix (this was when I lost my syringes and had to "work" with baking equipment and drops, LOL) that was clearly higher nic than I was used to, so I think it's possible to tell to an extent (I started mixing by weight after that, LOL. Much easier and equally as precise, I think....
Anna
For my ADVs I make up 400ml batches of zero nic juice, in a 500ml bottle. That dead space allows for good shaking. Then I add about 100ml to a 120ml bottle and add nic as needed.
Some of my juice mixes will go from an initial light amber (ish) to very dark when they have nic, in just a couple of months. Even 3mg. That is the nic oxidizing or otherwise reacting with the juice. My zero nic 400mm "master bottles" never get dark, even after a year. That's why I don't steep or long term store juice with nic. It was also a problem when I would drop my nic level, and then have to measure and do the math to try to reduce previously nic infused juice to some lower level. It is much easier to add nic to a one or two week supply.
Lots of ways to skin this cat; just giving some ideas that worked for me and might work for you. Or not.