idk.
fwiw
The listings pages I've seen for Suffolk are

Mardles - 
Norfolk, Suffolk, Cambs, Essex 
https://www.mardles.org/index.php/whats-on/music-and-song-sessions?showall=1&limitstart= 
&
https://www.mardles.org/index.php/whats-on/music-and-song-clubs?showall=1&limitstart= 

folkbluesnbeyond
http://www.folkbluesnbeyond.co.uk 
> More... > Local...

Folk and Roots
http://s522038395.websitehome.co.uk/Venues_South_East.html#Suffolk

Facebook
https://www.facebook.com/groups/467362479975249 



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&, for others maybe
East Anglian Traditional Music Trust 
https://eatmt.wordpress.com/events-workshops/