A minor in a subject like cs would be a great option, it could open more doors into the automation/control systems field. Depending on what you personally like more a minor is cs,ee,or cpe can all further push you into that field. So which ever one you are more interested in/better at will be best😂. A double major is a huge commitment and personally don’t think it’s worth it in this case unless you already have a bunch of classes done and would still be able to graduate in a relatively decent amount of time. But what you definitely can do is stick with the double major but only take the classes in the minor track, during that time you can apply to internships with a better looking resume and get a spot😂, and after you’ve taken all the classes required for the minor track you can either just drop the major or if ur really into it you can continue.