Yes, this is my opinion as well, Elon Musk will be very busy in the coming period with his new duties in his new position in the Trump administration, so I think he will not have enough time to think about these things.
He has big tasks in the coming period in addition to his duties in the X platform and his other companies, so I do not think he will have enough time to promote Doge or other coins, at least during the coming months.
You can be true because Elon Musk is an important part of Trump's administration. As far as I know, he got a special duty from Trump, Elon Musk becomes the chairman of Department of Government Efficiency. In this time, it is not surprising if Elon Musk becomes very busy and he has no time to do anything to Dogecoin. However, anything that Elon Musk does, probably still can have an impact to the value of Dogecoin.