Am I overreacting to the fact that my (23F) bf (24M) doesn’t know me?

We have our anniversary coming up and I planned on gifting him “6 gifts for each month we’ve dated”, one of them being a list of things I notice about him eg, he likes it when someone he’s upset with keeps calling so he feels important etc.

So anyway, today I was listing them out and we were laughing and kidding around etc.

Soon as it was done, he said “ik you pretty well too”. I said “surely but not nearly as well as I know u” (as a joke). Then he said “fine you’ll see, ask me something” so I said let’s start with the easy stuff.

“Favourite colour?- blue” “favourite movie? - something irrelevant that I think I talked about once” “favourite tv show? - I know it I can’t remember “ “fav celebrity?-some other popular actor”… so basically this is how it went for several other questions.

I took it as a joke but I wanted to cry so bad. 6 months of dating and all he knows is my favourite colour. I was visibly upset so he started apologising and said

“I know I’m sometimes very self involved but I promise I’ll know everything about u by next month.” Then he said “but dude these things don’t matter, the only thing I know is that I love u and that is all I expect from u as well. I don’t care how well u know me I only care that u love me”

The reason it bugs me even more is because even in normal conversations, he sometimes ignores or shows disinterest in me. Eg saying “what do I do with this info” when I was telling him about something that happened to my cousin. I used to think it’s al joke but it happens almost every time. All conversations we have are about him and none about me I feel.

I feel horrible. Am I overreacting? Is this stuff really not important?