Infection in lungs. What do we do.

My father experienced severe chills last to last night and the morning followed with fatigue. His temperature was noted to be 93 degrees in the morning and 97.5 degrees in the noon he got his bloods tests done and an x-ray if the lungs. The xray shows a small opaque patch in the right side, the doctor has prescribed some medications through IVs he got the medicines injected last night and today morning as per the prescription, yet however, he is still feeling dizzy, we checked his blood pressure and its low at 60/100 even reached 59, we gave him coffee, electrol, salt water yet there is no rise in the blood pressure. We are asking him to get himself tested for covid but he is not agreeing to that saying doctor has said to wait for three days to get tested.what do we do. Shall we wait or shall we get tested.I'm attaching the prescription and the reports here. Please help