Fitness App on my iPhone din't record excerice data

I have The Apple Fitness and Health app on my iPhone and Apple Watch Ultra 2. Today I forgot my watch at home. The Fitness app on my phone did not record any steps or exercise minutes or stand to close any of my rings at all.

Normally on my watch even if I do not activate an exercise at work and walk from meeting to meeting it logs my steps, minutes and all. My Phone alone did not.

Is there a way if I forget my watch again I can make it so my iPhone 16 Pro records it in my fitness app if my watch is at home?

[Re-Titled By Moderator]