IMO, the meme that you need to cut down your nic based on what atomizing device you are using is a fallacy. Use what you normally do post your results. I started out using the OCCs to gauge their performance and moved on to the RBA shortly afterwards.
Ideally, you should adjust your nic level so that is stays constant daily, despite the volume of juice consumed. For example if I vape 3ml/day of 10mg/ml on a clearo, I'm getting 30mg/day of nic. If I swap to a dripper that consumes 10ml/day, I should drop to 3mg/ml nic, to get that same daily intake of 30mg. This is easiest to do when using multiple devices with known consumption rates.
For a starting off point on a new, unknown device, you can go by wattage and get close. If I vape that 10mg/ml juice in a clearo at 10 watts, and I jump up to a 30 watt dripper, I'll drop to 3mg/ml and go from there. Obviously, this isnt exact, and works best when making small transitions, for example going from 20 watts to 25 might not warrant an increase, but going up to 30 might be worth knocking off 2mg/ml.
Either way, the logic follows more output = reduced nic levels needed.