Love my bro more than my son

I am 30 and my younger brother is 20 years old now. When he was young he got very ill for three years but thank God he recovered. I helped my parents raise him and I had a lot of responsibilities towards him (picking him up from school etc since he started daycare till he was like 12). I’m so so close to him (more than any of my other siblings- they are two years older than me). Anyways, I had my son a year ago, and I love him so much, can’t imagine a day without him but I feel that I love my brother more, he has a special place in my heart thatsnot replaceable. Is this wrong? Will I eventually have more love towards my son as he grows? Plz no bashing