Controlling Nest Thermostat Fan with Google API Changes

Hi everyone, I hope someone can help me with this issue. I recently noticed that after Google’s recent API changes, my ability to control the furnace fan on my Nest Thermostat has been affected. Previously, I was using the NST Manager app to manage this, but now it seems that functionality is no longer available. I’m really looking for a workaround to keep the fan running indefinitely until I turn it off manually. Currently, IFTTT integration works, but it only allows the fan to run for 15 minutes, which isn’t sufficient for my needs. I’ve heard about using a MimoLite to bypass the thermostat, but that seems like a costly solution, especially since it’s almost as expensive as a new thermostat. I’m hoping there’s a better way to achieve this without having to replace my current setup. Any suggestions or insights would be greatly appreciated! Thanks in advance for your help.