if you're talking about something like the archive that the old blog had, the new one doesn't have that yet, but will in the future.
For now, the only workaround I can think of is to create pages for each month+year with custom feeds that filter by categories and assign each post with the corresponding category like "April 2020".
Then create a text box with the proper names and hyperlink each text to the correct page.
Depending on how many posts you have, this will require some work.
If you have any other questions, feel free to ask me!
uh ha! got it! thank u so much