Day 1: Get a local SIM at the airport so you can use maps and ride apps straight away. Your Landedkits order is already in your room.
Day 2: Buy a Nol card for the metro and buses, and find your nearest supermarket or order groceries online.
Days 3 to 5: Visit your university's student services to start your visa and Emirates ID steps, and open a student bank account if you need one.
What not to pack: bedding, towels, pots and hangers. They are heavy, take half a suitcase, and your kit already has them.
What not to buy: furniture, a fridge or a microwave, because most Dubai residences already provide them in the room or in a shared kitchen. Skip big packs of cleaning products and decorations until you have seen your room. Check your building page first, so you only spend money on what your room is really missing.