My advice is not even about dollar to a naira prediction because both are not appreciative in nature but design to scam those that are holding them. If you want to hold, it is better you go for a ln appreciative asset like bitcoin. We have not gotten to all-time-high and the six figures. Both would be achieved between this year and next year.
As for you question, why no just specify the time. Example is to ask the question that what would be the price of dollar to bitcoin before the end of this year. You can not ask the question in an indefinite way. Before the end of this year, I am expecting at least dollar to be 2000 to naira. But at most, it should not be more than 2500.
Drop your predictions for the value of Naira against dollar?
This is not right because I think this is not the question that you want to ask. It is dollar against naira and not naira against dollar. There are differences between USD/NGN and NGN/USD. You are asking about USD/NGN pair and noth the other.