Analyte sensor sensitivity attenuation mitigation

An apparatus, comprising:

• a data communication interface;
• one or more processors coupled to the data communication interface;
• and
• a memory storing instructions which, when executed by the one or more processors, receives a first signal from a first working electrode of a glucose sensor positioned at a first predetermined position under a skin layer, receives a second signal from a second working electrode of the glucose sensor positioned at a second predetermined position under the skin layer, the second signal received contemporaneously to receiving the first signal, detects a dropout in a signal level associated with one of the first signal or the second signal, compares the first signal and the second signal to determine a variation between the first signal and the second signal in response to detecting the dropout in the signal level, and confirming the one of the first signal or the second signal as a valid glucose sensor signal when the determined variation between the first signal and the second signal is less than a predetermined threshold level.