Looking back at that scene, I think you could get away with some dialogue changes in those final few wide shots of their conversation.
I think if you established Palpatine has been the intermediary between Anakin and his mother, I guess you would have to make it so he already knows she is living at the Lars homestead? So you would have to cut the Watto scene, unless he decides to go to Watto to find out where the Lars homestead is.