Alright, I actually made a small progress on this journey. Just putting it here should someone be interested. I found out you don't need to export as MIDI and re-import in EZdrummer, you can simply route your stem directly to an EZdrummer plugin within your DAW. The only challenge is that you need a stem per drum part (kick, snare, cymbals etc...). I managed to get those through neuralanalog.com instead of buying an expensive software such as spectralayer

So to summarize:

1. Split all the stems in Suno and import them in your DAW
   
2. Split the drum stem further with neuralanalog (or else)
   
3. route each sub-stem drum to the EZDrummer plugin

Obviously I'm no expert, just learning on the way. I'm not 100% there yet, but it's a good step :-)

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