Converting SketchUp city model to Cesium tileset


We have a big model from an architecture firm depicting a whole section of a new part of the city and we’d like to use this model in our Cesium viewer. As the model is really big we need some way to convert it into a format which can be used. We have looked into exporting the model as COLLADA but as we understand it – even that format will be too heavy.

Is there any way to convert our model to a proper 3D Tileset for use in the viewer?

Thank you,