Help me! Boob/bottle confusion

So I work 8 hours a day 5 days a week. I give my 6 week old boob before I go in and pump for the rest of the day while I'm at work. When I pick him up he gets boob too. Well the only time he gets a bottle is while I'm working every other time he's with me he's nursing. But lately I've been noticing he wants the bottle over nursing like he gets mad when I try to get him to nurse. 😭