https://www.cbsnews.com/news/ap-interview-biden-ready-to-run-first-lady-jill-biden-says/

First lady Jill Biden gave one of the clearest indications yet that President Joe Biden will run for a second term, telling The Associated Press in an exclusive interview on Friday that there's "pretty much" nothing left to do but figure out the time and place for the announcement. 

Biden and the DNC have already taken steps to eliminate the possibility of a contested primary. They have even already ruled out the possibility of any debates. Unless the states start organizing primaries without the national party’s support and money this is inevitable. There will be clear steps taken by DNC if it is even remotely possible he won’t run and I just don’t see any indication of that at all.