2d animation, how to access general features

Hi, i'm new here, so please don't roast me, if somebody had asked this before... When you make a new file in the 2d animation format, is it somehow possible, to get back to the general format? so that you can access other features... i started working on an animation (haven't even animated yet) and wanted to include some Text (like a simple "khajit has wares..." meme), but have no idea how to access the text tool, because i started the file as a 2d animation...