Challenges importing fbx file from autocad

hello i would l have been encountering challenges importing a fbx file from AutoCAD. it doesn’t come with all the previous materials and texture. it also comes as one solid object. how do i deal with this please. i need your help

D5 2.6 version supports fbx with material import, but it doesn’t support importing complex material nodes for the time being. If the material is not displayed, it is recommended to use the format that D5 supports direct reading.