Apple watch not recording/recognising fitness correctly

Hello! I have been using my watch for years- avid exerciser- and all of a sudden this week have run into a glitch. Example: I do a 60 minute cycling workout and it "credits" me 2 minutes of my 30 minute exercise goal for the day. When I'm cycling I initiate the exercise time and hit "Indoor Cycle" just like I always have. The Active Calories also seem askew- seems to also be on the low side of what it should be. This has also happened this week with walking- it almost seems like the calibration is off somehow. I have googled and tried everything I've come across online already and am still not having any luck. I did upgrade my phone 2 weeks ago to a 12, but this problem surfaced just a few days ago.

Any suggestions are so appreciated!

Thank you!