Use shelly as input for OpenThermGateWay?

Hello! Currently I have successfully implemented a shellyHT and an openthermgateway (OTGW). The thermostat in my room now sends the temperature to the OTGW such that I am able to control the heating from home assistant. However, i want to get rid of the thermostat and let shelly send the current temperature instead. But I have no clue how to achieve this.

I use the

type: thermostat
entity: climate.otgw

card to monitor and control the temperature in the room at the moment. So I really only need to change the current temperature input from the thermostat to shelly, because the thermostat does nothing else at the moment. All other functionalities are already out sourced.

Thanks!