Hi, 

I am trying to back Portuguese Sweet Bread. I don't believe I kneaded it as long as I should have and now my dough is taking forever to rise. It's been set aside to rise for about 4 hours now. 

Can I take the dough and start kneading it again after it's been sitting for hours? 

I usually never pass the windowpane test with other doughs - but get close enough. This time around it seems like I should have waited until the kneading process was complete. I just want to know if I can start kneading again. 

Thanks!