Like I said, you need 8 GB of VRAM for this model. It might fit if you update to the "c" version I just uploaded, since it uses an updated backend that better squeezes the layers of the models into VRAM. Try closing your web browser too, and make sure the iGPU has as little VRAM as possible assigned to it in the BIOS, since it draws from your normal system RAM which most of the model spills into.
Basically, if I understand right the model uses 16.7 GB (gigabyte? gibibyte?), and it all has to fit into your VRAM + RAM. The backend uses an algorithm that's not transparent to me to fit a certain amount of that into your VRAM. 6 + 16 GB = 22 GB - the OS and other software using a certain amount - your laptop's iGPU using a certain amount, is making it a really tight fit, if it's even possible.