What’s your primary indication you are in ketosis (other than blood testing)

I’m trying not to obsess too much about ketone blood readings and just going by feeling and simply keeping my carbs low (10-20g net).

What are your main subjective indications that your body is comfortably in ketosis? And do you have any to indicate you’ve accidentally broken out of ketosis?

For me, it’s mainly how energetic/clear minded I feel first thing in the morning and how easy/difficult it is to go 16-20 hours without food. When my body is comfortably in ketosis I get exceptional mental clarity and have no problem with longer IF fasting periods.