This would be interesting to try. I've long thought my baptism wasn't valid because I was kind of pushed into it. My COBE (then Presiding Overseer) asked me at 15, "Son, why haven't you got baptized?" My response: "I don't know." "We have an assembly coming up. If you want to start the questions, we can get you baptized then." "Okay..." And that was that.
I lied when they questioned me on if I had dedicated myself in prayer to Jehovah. I didn't quite understand it at the time. Why should I have to tell him? He can see me, right? He should know my heart and if I'm dedicating my life. Anyways, after I lied, I did a brief perfunctory prayer to right my lie. Other questions I answered plain wrong because I didn't know the answer and wasn't thinking with a "spiritual" mindset.
I often think that if that conversation never happened, I wouldn't have been baptized until much later, if ever. Because once I got baptized, they made me feel useful with lots of chores and responsibilities. I got the big head, enjoyed serving, and kept reaching out for more and more.
Once that dried up and I realized that they were only so good to me because of what I was willing to do for them, I started seeing things with a different perspective. Regardless, I now wish I never got baptized.