actually the tweets of Elon Musk have helped a lot the dogecoin to rise in value and to be at the center of attention, but in my opinion the doge should not fear Elon's loss of interest in him but rather the strong expansion of his direct rival shiba
due Elon's musk tweet investors be confidence to buy dogecoin and they thinking get huge support from strong public figure which is also as techpreneur. Elon will continuesly shilling doge till his goal achieved in 2022 as he said before.
I think Doge can survive without Elon's tweets, Doge is already a part of top coins right now. Not only a top coin, Doge has many investors and even whales that put their money there. Another reason, Doge has a big community that looks loyal to support the development of Dogecoin in the future. Because of these reasons, it is very possible for Dogecoin to survive although no supports from Elon Musk. We cannot say Doge is a shitcoin anymore, it is one of the top 10 coins lately.
before elon tweeting about doge, this coin has been survive since this market launched and doge community was very strong and fanatic.