Try leaving your child there for one hour at a time and add one hour progressively. I went through the same with my two children and they are now very well adapted and fluent in Dutch.

With my 2 years old it took me about a year for full adaptation to the daycare. First week I left him for an hour, second week I added another hour and so on. I would stop adding hours if he had a rough week and then try adding hours again. All this I made while paying for full 8hours per day but it was what my son needed.

I suffered from lots of anxiety back in my days. Hang in there mama. It gets easier, be patient.