Tuya TRV valve position control

Hi

I have recently purchased and installed several Radiator valve with thermostat (TS0601_thermostat)
by TuYa. They have no way to implicitly set the position of the valve. I can set operation modes to heat and then use different pre-sets like eco, comfort, etc. But then these only ever seem to fully open or close the valve.
Does anyone know of a way to control the valve more precisely, so I can open the valve slightly and save on the battery power rather than opening and closing the valve each time.
Although they are working and I’ve already saving money on my gas by using them I’d like to fine tune them and get better control over their operation through HA.
Any help would appreciated

MP

I’d be interested in this answer too.