Use the Draco compression tool mentioned above. Alternatively, use a service like Vectary or Sketchfab to host the model and embed their viewer (which loads faster than self-hosting).
: A specialized tool for converting 2D images (JPG) directly into GLB 3D structures [29]. free glb 3d model download
These platforms are highly recommended for their extensive libraries and ease of use: Glb 3D models - Sketchfab Use the Draco compression tool mentioned above