Apple 6 Watch battery drains for no reason
I have an Apple Watch 6. Normally I get at least 2 days use on the battery. But lately, there's been a big overnight drain on the battery. Yesterday evening, it was at 90% when I left it on the cabinet. When I picked it up today, it was at 23%! I had not worn it since yesterday evening, so it lost 67% sitting on the kitchen cabinet. And this is happening consistently. I've had every Apple watch, and none of the batteries have had this problem.
When I first got the watch, it kept a reliable charge. The big drop in the battery charge has been happening for about 3-5 weeks. Could the battery drain be related to a recent OS update?
FYI: I don't get an excessive number of alerts, and I use it to answer the phone occasionally, IOW, average use but nothing to explain a 67% loss of charge overnight sitting on the cabinet.
Thanks in advance.
Apple Watch