I don’t know about “should” do, but I spend the first 2 months doing whatever I wanted because of the 9 months I missed out on doing what I loved. It made me lose my hobbies from being disgruntled or routine. So I tried to get back into them (some I did, some I couldn’t). I celebrated making it out in one piece.
I spent the next few months learning to drive and looking for a job. Made some business cards for myself. Worked on my
CV a million times.
The last thing I did was to relax. I graduated with 2 first degrees, I got a job, I got a car and I (had) a partner at the time. The tough part is over. Rewarded myself with a beast PC with my first 2 paycheck which is still near top of the game 3 years on.