Please outline to your wife exactly what will happen if you are DF'd......
I must ask you to consider if you really know where your wife really stands on your position at this point in time? She could have feelings that you need the help of the elders to get "readjusted" in your thinking....... Or, some spouses have actually felt a loyalty to the Cong when their mate has been questioning the doctrine.... In either case, it can result in the investigators receiving too much information that they can use against you. The minute they get suspicious, their Loyal Love and desire to help mutates into Theocratic Warfare and keeping the cong clean.
To continuously put off a visit throws up some red flags unless you have a "valid" reason for refusal, such as depression, illness, etc. WHY would you not want the encouragement of these wonderful, godly men? Have they possibly already heard from someone that you have confided to that you are having some "doubts" or worse, "apostate thoughts"? (This could have even been your family members from "innocent" discussion with them as to why you were not at the CO visit or CirAssm.)
If you do NOT want to risk being "outted" then you must maintain total control of yourself if you agree to meeting with them. You CANNOT divulge that you have any disagreement with GB/WTS doctrine. Even just having "doubts" will put you in their continual radar. Much better to be "stumbled" by something that Brother @$$hole did or said to the point that you just cannot believe that he is serving....it is a travesty of divine justice.....you can only wait on Jehovah and His Org to make things right. Every time you seem to get past it, something happens to stir it up in you again and the flood of emotions are uncontrollable...... In the meantime, you are doing more Bible reading, prayer, and meditation. And, perhaps, you really need to talk to your doctor to see if it's something physiological.....you know, this old system of things is really having an effect on all of us these days.....things are really so bad.....isn't evident that the END has to be NEAR......
(Now write that out three times and memorize it).