iphone 12 battery 64 percent health

I have a iPhone 12 pro max i bought at the end of august 2021. This makes it about 1 year and 2 months old. The battery health is at 64 percent and drops about 1 percent every 3-4 days now. The battery lasts about 2 hours on a full charge now. Thinking of just buying a new phone cause this is getting unbearable. Is this normally what happens?