Hi vinman and welcome. My husband and I were true believers too. He was an elder and he pioneered for 15 years and I pioneered for 10. I wanted to save lives because I thought people were going to die at Armageddon.
When did we stop researching the WTS? At first we were very busy getting our lives on track. We had to get jobs, my husband was cleaning windows. We eventually studied for degrees to get better jobs so we could buy a small house. Then we had a baby before it was too late for us.
Your life has been different, you need to get your head clear for the sake of your family. When to stop researching? When you are sure you will never return to thinking it's the truth.
Just take your time and realise that this is the beginning of a very long journey. If you want to stop and take a break then that's a good idea. Each time I read a new book I had to take a break from reading for a week to take it in. We were sheltered from reality and facing up to it can be hard.
As smiddy said many of us have continued researching the Bible and found it equally wanting. The WTS didn't stop us believing, our research did. Take your time, keep it to yourself for now and come on here to vent. Where you stop your research is entirely up to you. Personally I love reality, but it's not for the faint-hearted. Take care.