When Trump took power in 2016 there wasn't much of a plan because nobody expected it. Today Trump's backers have Project 2025 ready which has a specific plan to replace anyone who might be able to slow things down in the civil service, armed forces, justice department, etc... Not to mention the immunity doctrine that the administration now has from its handpicked supreme court.

In theory there are things Biden could still do right now to help preserve these institutions but I doesn't look like he will, or even like he has the mental capacity and empathy to be motivated to do so.