Desperation anxiety

I’m losing it 😩 my almost 8 month old just screams and cries if I’m not constantly beside him. I have to be sitting right next to him at all times or he loses his mind! I can’t walk away to make myself a cup of coffee without him crying. Even if he can still see me. I don’t k ow what to do. I can’t get anything done :( and I can’t baby wear so that’s not an option. Is it just a phase, or can I do something to get him used to being on his own for a few minutes? It’s been going on for a month now and I’m at my breaking point