Sorry to break it to you but doge has so much supply it would be almost impossible to reach 1 usd. Doge is one of the top 5 most famous coins. Other coins are practically nothing compared to doge but why do you think doge is priced at 60 sat. It is very easy to obtain thru mining because of high block reward. Supply is uncapped. There are over 100 billion doges by now and additional 5 billion doge next yr. You think doge can still reach 1usd in the next 5 yrs?
What im saying to you is it wont reach 1usd because the demand would not reach to the point that it will dwarf the supply to be able to reach 1usd per doge. Drk is also top 5 coin with 22m max supply. It is around 1. 50 to 1.70 if im not mistaken. Do you even imagine how doge coin would need to achieve to reach 1 usd? Even if you beat btc ltc drk but with unlimited supply and that kind of inflation. It wouldnt be enough
Don't even bother. If he wants to think that Doge could reach 1 dollar, which would give it a market valuation many times bitcoin's, then let him. Everyone has the right to dream, lol. The chance of that happening is probably lower than the chance of an all out galactic war between Thor and Superman.