Thanks everyone! Definitely not going to give him green tea leaves.
It’s a bit frustrating here in the Philippines since there are only a few products/supplies for rabbits available. I was worried about my bunny since it wasn’t taking the pellets. The pet store attendants told me they just feed it with cabbage (which i never gave him) and rabbit pellets! but I read I needed some KMR since he’s still young and lots of alfalfa hay. Unfortunately, they don’t carry such products. I checked with the vet and she gave me vitamins (for rabbits) and told me to add a few drops in his water just in case he doesn’t eat that much.
Thank God he is eating well now. I found a way to include pellets in his diet, I mush them up with water and oven dry them into crumbles. He likes them best with some herbs like basil or rosemary in them!
So far no poop issues, pee is just right and no signs of illness. Just a hearty eater, actively curious and very affectionate baby bunny. 