Help designing a P-Channel FET circuit for switching an external tablet mic

[xtv]

Hey guys,

I'm using a high-end tablet as a satnav / multimedia interface in my car.
To make things nicer, I'm using a MCU to read the can-bus commands from the steering wheel, triggering the tablet's playback functions through the headphones jack.
I'm redesigning the circuit and wanted to add a voice command functionality, using an external mic.

For that, I need to be able to switch the mic on and off using the mcu 5v logic level.
I'm guessing switching the positive side is ideal, as the transistor will add some resistance and having some resistance between the ground and the mic ground would generate noise?
The thing is that, the mic+ terminal on the tablet outputs something between 1v and 2v (waiting for a TRRS plug to confirm the exact tension).

I've built a circuit on Circuitlab and did some simulations, but they only look reasonable if the mic+ terminal would be 4v or 5v. When I drop things below 2v, the FET will only flow current when the gate falls below zero.

I'm really not knowledgeable with transistors, so I'm wondering if I'm just not using the right part, or if my circuit isn't correct. Any advice will be helpful.

Many thanks.

Circuit: https://ibb.co/6W3KjL1
Simulation 1v8 mic jack: https://ibb.co/F3ypmfB
Simulation 4v mic jack: https://ibb.co/7SDt0cD
Simulation 5v mic jack: https://ibb.co/2Pmct0x

[RES]

A better P-channel MOSFET is an enhancement type for example like the PMV32UP, has a much lower Vgs (P-ch mosfet switch in high side supply rail) Or if you want to toggle the audio signal then better use a special popless/clickless analog switch chip.