You put the switch in smart bulb mode, right?
You can still set or adjust the brightness even though the output stays at 100% and the light stay on, right?
The bar shows the dim level, right?
I think this help will help. Basically, when the level of the dimmer changes, you pass it to the bulbs.
I don’t know how to get the bulb brightness back to the dimmer without creating a loop where they keep updating each other. Check this thread, maybe there is something there that can help. I will say one way you could do it is by only adjusting the brightness through the dimmer and letting the automation adjust the bulbs.