Second baby

Wasn’t sure where to post this. I am 37 weeks pregnant with a not quite three year old boy. Now that my due date is getting closer I’m starting to feel some irrational guilt. I’m more than excited to have another baby and it took us over a year to conceive but I feel kind of bad for my oldest. I’m sad that he isn’t going to be the centre of attention anymore as he has been our entire lives since he was born. We have made a plan to ensure he still gets lots of time with both parents and obviously we are still totally obsessed with him but naturally there will be times when baby will have to take priority for example during feedings. Is this guilt normal? Does it eventually fade? Do your children eventually get used to their sibling m? I’m an only child so I really have no experience thanks in advance 😊