Can’t eat at all

I started retatrutide 5 days ago at 2mg and a few hours after I felt nauseous and that lasted for about 3 days. I can barely eat over 1000 calories a day and I’m a 190lb man so it’s way below what I should be eating. Food looks complete unappetizing and my appetite is completely gone and when i do eat I can barely eat anything. I haven’t eaten over 1500 calories since my first dose and my body is running on fumes right now. I’m planning on decreasing the dose to 1mg/week is their anything else I can do to help this issue?