Hello. I have a question for all of you. Should i remake my 3d game in 2d because the graphics look really bad and all of the 3d models won't be done in time. Please i need at least one opinion ASAP.

Well first of all, this game jam isn't about "finishing" a project at the end.  The goal is to just work on game dev everyday.  But if your personal goal is to finish a game then choose the best option for that.