AFAIK, you have to apply nicotine quite frequently to achieve a steady state and avoid withdrawal – every 30–45 minutes. 10–20 years ago, every single smoker I asked smoked > 20 cigarettes. Today, almost all admit to only 10–15, which is pharmacologically too infrequent and triggers multiple withdrawal–relaps cycles every day, worsening the nicotine addiction.
To handle drugs which are so addictive, you need a stable steady state, not fluctuating pladma levels. If you want to lower your dose, you cannot lower the frequency, you have to lower the dose of each application.
If vapers would vape every 30–45 min ≈ 20/day, they would stabilize their nicotine level, which would enable them to reduce the dose of nicotine over time.
Might be wise to not accept the offer of the installer to partition the device in this case. That’s self–evident to anyone who lived through losing data, not so for beginners.