My son screams before bed time

Ta

So I try to keep a routine for my little one who is 6 weeks and I have an 8 and 5 yr old. So a schedule is important to me to try to be sane for a bit. I have no issues getting him to nap. He will have maybe 2 good naps. He is usually awake at 6 when I feed him then I bathe him at about 7 and he is awake for a bit until his next feeding. For about a week or so, he puts up the biggest fight and screams and basically has to calm himself because he seems to get worse when I try to get him to take a pacifier. I also give him a little more to eat at night because he always acts like he wants to eat more. Has anyone else gone through this? What are some advise so he isn’t screaming?