Is there any way to reduce the server-side memory footprint?

I have theia deployed in kubernetes (not che), and I’ve noticed it takes up quite a bit of memory per instance. See output of kubectl top pods below for 5 open projects:

NAME                                                              CPU(cores)   MEMORY(bytes)
ide-controller-77d88885d7-wknkz                                   1m           54Mi
theia-deployment--am091610--john-74d5648bd6-hns5c                 122m         334Mi
theia-deployment--db100808--bookstore-b7bbf46c8-znrh2             119m         249Mi
theia-deployment--rc090209--ice-cream-you-scream-c64c988487nshn   258m         577Mi
theia-deployment--robotben--test-project-6fcfbc988b-ljghz         115m         492Mi
theia-deployment--trenzor--ice-cream-you-scream-6d8bd954f6jgw65   153m         353Mi

Are there any tweaks/optimizations that I can make to reduce the memory footprint?