Yes, but you make it invalidly. There is no logic whatsoever in the leap from "all perceptions take place in my mind" to "all reality takes place in The Mind". You simply take a leap of faith at the end, and that is what the chief complaint is.
Everyone agrees that the jump from "all perceptions take place in my mind" to "there is a material universe" is also a leap. The thing is, we have to choose one of them.
You claim to have given a proof for the truth of your option, but you have not.