MacBook Pro 14 M1 Battery Health Dropping Rapidly

Dec 21, 2021 and now at 93%? That's actually pretty normal.

It's advisable not to attempt to micromanage your battery. Set optimization On and let the circuitry do the managing. Charge it when it needs ist use battery when you need to and enjoy your Mac. Minding a given % of battery charge is not getting you anything, let the Mac take care of itself.

Don't completely discharge the battery for long periods but other than that just use your Mac as you want.

Important to note that battery health decline is normal, but also that it's not linear. I have a 16" 2021 with 20 cycles that's at 100% health, a 16" 2019 with 81 cycles and 92% health, and a 15" 2018 with 315 cycles and 90% health.

Over years of working with Mac laptops, my experience is that health can start anywhere between 97-105% (because the denominator is the design capacity, and manufacturing variances mean some batteries will have slightly higher or lower capacity than nominal). Health declines to somewhere between 89-93% over the first 100 cycles or so, then stays there for several hundred more cycles.

Apple recommends replacing a battery when the health falls below 80%. Your Mac will tell you when that happens.