Is it bad or abnormal to have feelings of jealousy toward another family member and her baby?

I had my baby 1 month before this person had hers. Both boys. It has been a couple of months.

The dilemma is that every one of our family members is always praising her baby and telling her how amazing and beautiful her son is.

They don’t treat my son the same or show him the same type of love, and it is absolutely frustrating. I don’t want him to grow up feeling like his other half of the family doesn’t like him as much as the other baby.

And I feel as if they are always being compared because of their close age gap.

What do I do??