Corona positive with CT value 16.

My father got fever about 7-8 days back for 1-2 days only body ache and We started his medication on last Monday of arithromycin od 5 days, ivermectin 3 days, dolo 650 as needed, montair LC OD 5 days, zincovit is continued and limci twice a day is continued. Now 2 days back he got severe backache and fever so I gave dolo and his oxygen was 91 to 93 in oxymeter. Yesterday I got his RT-PCR and his report is positive then yesterday also I gave 2 tabs of dolo now he has no fever, no body ache and oxygen is 94 to 96. Two years back he has a history of short in breath so we got him treated and he got fine after the medication of 20 days, now when he walks his breathing gets faster (saans foolna). My question is now that now as he is Corona positive so are there any test we need to get done? Or should we get cylinder arrangements? Pls do revert I am msging from mohali and have no doctor support here nobody is here to ask anything. So pls help🙏