Uhh, the point of the jam is for participants to make a game during the jam period (48 hours), so 6 weeks is def too long. If you wanted to submit something tonight or early tomorrow that works for me, but anything longer isn't allowed
Is your game playable ? Do you have atleast something people can play? I don't care if it's just one level. You can update your game after the jam if you wish, otherwise you overestimated how much time it takes for you to make a playable game.
2 weeks is still way too long. The idea behind a game jam is to push yourself to make a short "complete" experience that people can play and rate! While updates after the jam is super encouraged, the jam is over, and I can't possibly extend the submission period. If you have something playable, please upload it to itch if you want to have your submission to qualify, but if not, I do have to remove it from the jam. Regardless, I wish you the best of luck with your game!