Accidentally got a job now im freaking out

Im an engineering major thats admittedly been sloppin it for the past year. I didnt realize how big of a mistake that would be as ai use was encouraged in my university. So I have till April to polish myself and get myself up to standard. My work will be on replicating sensor models performance in simulation enviornments. What kind of things should I focus on to best prepare myself for this? Thank you