1)Download Model converter extension.
Go to Extensions -> Install from URL -> Paste this link https://github.com/Akegarasu/sd-webui-model-converter -> Press install
2) Prune model
Copy my settings -> Press run
Go to Extensions -> Install from URL -> Paste this link https://github.com/Akegarasu/sd-webui-model-converter -> Press install
Copy my settings -> Press run