I would always have trouble between 90 and 120 days. I’m not sure if it was partly biological or what. The thing that really helped me (as odd as it may sound) was an attempt to focus on the welfare of others. That’s what seemed to get me past that difficult period at 3 to 4 months. If I were you, I would focus on exactly what has gone wrong at about the 6 month mark in the past and make sure you do things very differently as this time period approaches. Keep expressing your willingness to work with a sponsor and I believe it will happen. Best wishes.