Jace: he will ignore everybody else and only focus on you, he will get you anything you want and check up on you every minute
Alec: he will grab lots of random movies, sit in your bed, cuddle with you and binge watch them
Magnus: he will try to cheer you up and make you laugh as much as he possibly can
Simon: he will make sure you take all of your medicines and give you hugs
Raphael: he will tell everybody to leave you alone, take you to your bedroom, draw the curtains leaving you in the dark to relax.