Hi Obidiics! Yes, you can use old assets and get help from old scripts. However, this doesn't mean you should copy-paste everything. Try writing by yourself first; if you don't remember, take a peek, if you struggle to copy-paste word by word, not with shortcuts! This way will help you to practice for future projects. Lastly, you should do %50 of the project you submit within the given time limit!
Good luck!