Hello, who at what time picks up the kids from kindergarten?

Hello, who at what time picks up the kids from kindergarten? My son is five and a half months old, I took him to kindergarten, he's been there for about a week and two days, and he's still on my chest, I am forced to breastfeed him to kindergarten, so I need to work, but he cries every time I give him away, and to this day he cries, plus he's still on my chest, he's used to being with me, and every time he cries, I'm very worried, and I think about him all day long.