Battery degradation on MBA M1 2020

Hi all,

I have this MBA M1 2020 for 6 months (September 2022) and this is my first macbook ever. I tried my best to prevent the battery degradation by reading other's experience and watch some videos about the cycles, max and min charging, and other stuff. At first, I charge when it's on 20-ish% to 80% at maximum manually, sometimes I missed by charging it over 80% (90ish% at max, rarely 100%). I also kept the optimized battery charging feature on.

After 2 months of use, I noticed the battery's health was degrading to 99% (on the 20th-ish cycle). I thought that was normal since the battery will degrade after all. Some times later, the battery's health kept degrade untill I decided to install AlDente and coconutBattery last month to prevent overcharge and monitor my battery performance in real time. I set the maximum charge to 79% and never drain it below 20%.

I'm aware that coconutBattery percentage is different from macbook's system percentage (read other users review). In the beginning, the coconutBattery shows the battery's health is on 89.1% and the system is 95%. As of now, my battery's health is 87.9% on coconutBattery and 93% on macbook's system, only after 8 cycles. To keep in mind, my usage is completely normal, I only use this laptop to do light task. No video editing, games, coding, etc.

Here's the screenshot:

coconutBattery

system's battery

I tried to compare it as well (using coconutBattery features):

My questions are:

1. Is my battery's health degradation considered rapid or is it normal?
2. If it isn't, any other tips that can prevent from nosedive?
3. If the battery's health keep degrading to below 80%, will the battery drain rapidly while in the use?

Thanks!