for visit visa, 1 month + two months extension.  On the third month, ask for another extension, no harm in trying. If it is granted  then maybe you can stay longer.  If disapprove, then pack your things and go home.

After three months, let your uncle apply fo vicist again (since you love coming here), if approved then it's 1 month +2 months extension again.

And you can repreat that sequence infinitely!