When do you change oil?

Hi people My Gpz500s is now standing just under 1.5 months until it is driven again. Wanted to make an oil change this year.When should it be done most optimally? Before I drive it again? So in the next weeks. Or should I drive it first something`? I heard that the oil runs much better and also out of all cracks when it is warm. So now it’s so cold outside. And when I drive it and it’s warm it should be better to make it then. I would j interest your opinion and experience. Thank you