Climate fan mode in HomeKit

I’ve set up Nest integration along with HomeKit integration, and successfully have my Nest thermostat (climate) exposed to HomeKit. The only thing is I can’t seem to figure out how to control the Nest fan_mode toggle from HomeKit. What’s the right way to get HomeKit to control the thermostat fan as well?

Here are the attributes of my Nest thermostat:

hvac_modes: off, cool, heat_cool, heat
min_temp: 50
max_temp: 90
fan_modes: on, off
preset_modes: none, eco
current_temperature: 73
temperature: 73
target_temp_high: null
target_temp_low: null
fan_mode: off
hvac_action: idle
preset_mode: none
friendly_name: Bedroom
supported_features: 27

I’m running HA version 2022.8.2