@mbarney an observation, the power is being turned off on the off board ADS1115, but not for the Turner. The ADS1115 Analog inputs are only specified for Vdd+0.3V. If either of the Turners outputs are above this, then it will feed through to the ADS1115 Vdd Sw5V. Probably won’t account for what your are seeing.
I found a I needed to know when in sleep v current consumption, so used the Ttty to know when its in sleep mode, and to measure the current at that time. (I have Adafruits INA219)