Sensor sampling rate

I have the following sensors connected to a raspberry pi 3.
-Water level sensor over i2c connected to HA over command line to a python program
-Lux sensor over i2c connected to HA over command line to a python program
-One wire temperature sensor
-One wire humidity and temperature sensor

How do i set the sampling rate for these sensors?
I am able to read the graph of the CPU use in Grafana properly but I am not able to see any data for the Lux sensor.
The Home Assistant UI also shows “11 hours”. What is this 11 hours? Is it the next sampling time? If so how can I reduce it to sample every minute?

I believe the 11 hrs is the last time HA got any data from the sensor