I’m not saying that you shouldn’t pay attention to all those things, I’m just saying that Garmin’s Training Advice is not the best guidance…
Subjective scores (these should always take priority because no algorithm can tell how you feel on a consistent basis) together with the Fitness chart (Form - Fatigue), RHR and morning HRV can tell you a lot better what is going on.
If you have regular measurements of RHR and HRV in the morning, there is an extension that gives you advice on how you should handle that day. It’s called I’mReady4 and runs on your phone as a Matlab script. It takes RHR and HRV metrics through the Intervals API and shows you one out of 4 advices: HIT, LIT, As Planned, Rest.
I also set up a chart for the Fitness page to show you the daily advice from within the Intervals app. You can find the chart in ‘Custom charts’
The I’mReady4 app with the Training advice chart are based on ‘ithlete HRV’. Together with the HRV and RHR charts which are based on HRV4Training, these should give you a better view of your actual state of readiness, but still prioritize subjective scores if in doubt.
You can read up on both sources here:
https://www.myithlete.com/how-to-use-the-ithlete-pro-training-guide/