The only way to regain your HPTA and natural test production is to eliminate AAS from the system. Like DIV said you cant fool your body, it can tell. If you want to come off AAS you must stop taking them, yes all kinds of not so much fun stuff will happen and there is no way around it. The body must seek normal function and it takes time to re-adjust.
Now if you wanna fool yourself and think you are back to normal then bridge, but if your goal is to come clean you must stop all together, there is no way around it, that simple. Of course the results of ceasing AAS will not come on while bridging or taking low dose AAS......thats cause you are still ON!
This thinking only delays the inevitable, my feeling is when its time to come off AAS your should run as fast as you can into it, not stumble around. Your either on or off anything else is halfass.