@tqAkshay95 the question is always is what you are trying to find somewhere in the data. With a pandemic there are obviously outside factors that influence the numbers (measures, inoculations). Some illnesses have some seasonality though with covid and depending on country that might not be the case.
Also with pandemics everything might happen in shifted intervals where you see effects some weeks later. From what I hear from friends that worked for large health institutions modeling pandemics is notoriously hard.
As other people have said a time series approach might be best. You could also try a regression approach where you give the values of the previous months as features. You might take that as an exercise though with your very limited data I doubt that the model would really work.