Hi Kayoryan,
I Am sure you figured he is trying to communicate with you. My 6 1/2 year old does this and often follows me around. I try different things, I offer my hand to smell, sometimes he licks it snd sometimes he bows down for a head or ear scratch. Other times he wants neither so I offer him some kale and if he is looking to eat, he is happy. Rabbits are smart, you can try to train him to tell you some of the more common needs.
My rabbit flips his plate when he is hungry or if he does not like the vegetables he has been served for his meal.
be patient and try different things- check his water, check his nails, offer him a scratch or fresh food. Sounds like you love him and your a great bunny parent Good luck!