I prefer to swirl rather than stir as over-stirring can cause the sugar to clump, however a little gentle poking at the melting mixture with a wooden spoon or spatula won't hurt. (alchemyinthekitchen.ie)
Give one a gentle poke if it bounces back its ready to come out. (baketheneat.com)
However, if the dough is very fragile, even a gentle poke will collapse the dough. (sourdoughhome.com)