Writing and Worldbuilding

I’ve been meaning to get back into writing for a while and I have a story in mind that needs a bit fleshing out so, since my current project is kinda ahead of schedule I’m deciding to take this off of the backburner and start cooking. A lot of this will be just freewriting? on the story itself so, I can shove my inner editer aside (because he has stopped a lot of writing in the past, that bastard) and, get a lot of words down and out and just form a habit of writing in general. My goal is to have the worldbuilding finilized and at least 2000 words towards the story (unedited) on the page (it seems like a low goal but I 've always had a hard time with writing so this is a pretty lengthy goal).