It’s hard to know what the actual issue is but I see three red flags with your circuit.
- You are directly driving the input of an Op-amp without any ESD protection or current limit. Furthermore one of its inputs is at the supply rail, some op-amps don’t behave reliably under those conditions.
It’s possible that the input node slowly drifts until that op-amp is out of range.
- There is Vdd and a V+ label in your supplies.
Given the connections, and without knowledge of the rest of the circuit, it is possible that your op-amp is being powered through the ESD diodes. That would not be a very stable condition.
- You have quite a bit of gain in Sallen-Key filter stages.
These types of filter quickly approach instability if the gain is too high. Gains >2 are somewhat rare. You should make sure you are not too close to the edge, where just temperature or offset drifts could put it out of bounds.