Where to take a toddler to learn some German

Hello, we are only going to be here in Germany for 2 months. I would like my son who is 2.5 years old to learn some German before we leave. I would like him to attend a school or maybe a learning center a few times a week. I have contacted my city but all the schools near are full and can't accept anymore students. I am also interested in some playgroups for 2-6 year olds with German mothers if anyone out there is interested. Thanks

Shouldn't the child be playing and socializing at that age? I always thought that they cannot sit still at this age to learn german...but maybe I am wrong...

Yes, I am also wanting some info. about playgroups to socialize with other kids in our area!!!