I am the payee want guardianship lifted

My wife has been the guardianship payee for both my SSDI and my minor son's benefits. I am on SSDI do to Bipolar and Social Anxiety issues. She was appointed from the get go do to a horrendous gambling addiction. I have not gambled in over 8 years. My Dr will attest to this, as well as banking statements. I also need to know how to gain access to my son's already established banking account that holds the lump sum payment from when I was first approved. She ran through mine.