to add onto what the team said: you can use the console (you will have to create an options.rpy in dawn chorus\game with the text "define config.console = True") to jump to a specific portion (the command is jump.dayX_day_part, with X being the day and day_part being the name of the chunk, you might have to dig in game files to find that specific name). do note that the game might break if any major dialogue choices were skipped.