you can tweak how many particles of each type are displayed after the fact. Under the particles tab Viewport Display Amount. And yes it does also change it in render not only viewport.This way you can reduce each particle type individually. For this to work you need to set combined export to none:

[![enter image description here][1]][1]

[![enter image description here][2]][2]

[Here][3] You can find the official documentation where everything is described. Hope this helped


  [1]: https://i.sstatic.net/HrABi.png
  [2]: https://i.sstatic.net/Zn4Te.png
  [3]: https://docs.blender.org/manual/en/latest/physics/fluid/type/domain/liquid/particles.html