Less from pumping?

Em

I breast feed and pump in the morning to have some in the fridge. Last week I was getting close to 3oz when I’d pump after her morning feed. This week I’m only getting 0.5oz (both breasts).

Baby is 5.5 weeks old.

Should I just keep pumping for longer after the stream stops? Try for another letdown?

Has my supply decreased?

Is baby just eating better so there’s less to pump after?

Looking for suggestions. She eats 3oz per feeding so I need to have at least one 3oz bottle in the fridge per day.