As far as I know, the Minilab Mk II does not listen to MIDI commands transmitted to it, other than SYSEX commands that are sent by the Arturia MIDI Control Center to configure it.
This means your strategy to have the knobs be synchronized with what the DAW knobs are doing will not work.
However, there is another way to do this. It involves having the Minilab knobs transmit in Relative mode instead of Absolute mode. In Relative mode, turning a knob sends a MIDI command that needs to be interpreted by the DAW to increment or decrement the CC value. This means the DAW will move the CC value up or down from its current position, instead of jumping from whatever the current value is to match the Absolute level transmitted by Minilab knobs in Absolute mode.
You configure Midilab knobs to use Relative mode using Arturia MIDI Control Center software. You have to choose one of three possible Relative mode options - one of those will probably match what your DAW can handle.
Documentation on this is often sparse and cryptic. Here’s a document I wrote, after spending hours figuring it out, that explains in detail how Relative mode works on a MiniLab Mk II and how I configured it for the MPC Beats DAW.
http://chromakinetics.com/mpcbeats.html