The expectation of producing high volumes of code in short cycles is a red flag.
Programming is not data entry. Programmers are not typists. Programmers make progress by creating building blocks that can be reused later. In 2024, many of those building blocks already exist in the form of libraries.
If there's no reusability, everything is a special case, there's duplicate code, your program maps 1:1 to your data... there is a good chance you have a problem creating abstractions. In that case, the junior is you, and you are not the right fit to be a mentor.
If you see a constant need to micromanage people, that is a symptom a highly insecure personality that is unsuitable for management, or trust issues, or poor recruiting skills, or poor delegation skills (matching the tasks to the wrong skills). All of those are signs that you may not be ready to be a manager. Micromanaging will just stress and demoralize your workforce.
If someone is unreliable enough to need a conversation every day, either you or that person should not work there. And if this is the case for every junior engineer in the team, and the situation persists for long periods of time, the likely reason is that the problem is you.