Removing adjacent blocks

I wanted to add geodes to my mod 1.16.5 and thanks to a video on YouTube, I managed to do that, however, the only thing left to be perfect is for the crystals to be destroyed automatically when the druse is destroyed. Thank you in advance for any help.

If necessary, the video in question was this: https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https… =2ahUKEwjVofWxkcCCAxVIrpUCHcdDAZsQtwJ6BAgREAI&usg=AOvVaw2gO1xk3zk1TZIGLLy2Xwac