How do I tell him?

Hi ladies, back story.. I’ve been with my bf for only 3 months and I’m starting to think nothing’s there..

He’s such an amazing guy, goes above and beyond for me but our personalities are completely different. I’m hyper, social just always trying to enjoy life and he’s super calm.. and not so talkative. I feel like at times there not much to talk about because of how quiet he is. And I’m starting to pull back because I’m not clicking with him, I have so much respect for him and I know this is going to completely break him.. I guess I just wanna know how’s the nicest way to tell him. Is it blunt to tell him because of our personalities?

Is it a red flag that we’re only 3 months in and I’m kind of bored of this relationship? Or should I give it more time and hope it progresses?

Also edit- we went to our first festival and he was so calm and quiet and it just didn’t feel like I could enjoy it with him.. but idk if I’ll regret this only because of how nice he is..

Please help