My bunny don't eat veggie :(

Hi ! So I recently rescued a bunny, he"s name is Pop's and he's 2 years old.

Before being rescued he lived in a cage outside 7d/7d. He was fed with seeds and all the bad things we found in the non specialize shops.

This summer an association saved him and for two month they fed him with sames seeds, apples and carrots. (There are more use to save cats and dogs).

And now it's been a week since I adopted him and I try to make him eat veggies but he's not interessed. He eat a lot of this : Versele-Laga Nature Cuni and drink a lot too. He kind a eat some mint, coriander and carrot top but no salads of any kind. He"s poo are fine, once a day I can find some soft one but not much.

So I'm looking for any tips to make him eat more veggies :)

(That's my second rabbit, never had the problem with the first one since I had him very young)

EDIT : HE'S EATING HIS VEGGIE 🥳 thank you all for your advice