The Daycare, can... assist him and with the homework.
Typically, in after school care, they do have a certain time blocked off for "homework."
The other dynamic that is probably happening is: by 6:00pm, a Kindergartener is usually very tired... from their long day. And it is hard for them to just sit/focus/have the patience to do homework, at that time or later, because they are tired.
Is this Daycare, an after care that is ON the same campus of his school? Or he is bused to another location?
Is this a Daycare, that is tied to the school... or one that you picked yourself? Meaning, IF the "daycare" program... is one that is affiliated with the school and one that does after care for the kids of that school... then typically, they do, have a time blocked off for homework. AND if you are not sure, then you need to speak to the care-provider's of that after care program, and S. what their daily routine is.... for the kids of THAT age.
Kinder kids, do need assistance with homework. It just is.
They are not fully independent about it yet, nor can they time manage like an older kid.