My heart goes out to you my friend as I am in a very similiar situation. Plenty of good advice here.. Just take it slow.. Try to sow seeds of TTATT. Do NOT spill your guts, and tell her all you know, It will NOT work. Just scale back slowly on WT activities, show no interest or zeal, and try to ask questions to draw her out. What are her weak points/doubts? Once you find these you can think of some questions to ask her to draw her out, to make her think for herself. This is easier said than done, and may not work, but this is the best way IMO. I have a 3 year old girl and it pains me to see her go to the KH, but I think as a child gets older and has one parent who allows them to have "worldly" friends, celebrate birthdays, play school sports etc, they will automatically gravitate to that parent 90% of the time.
I think that it is very difficult when one spouse is in and the other faded, for the faded one to make sure the child has a normal childhood, seeing as the believing parent may out them when they see the child "going to the world". On the other hand if you are DF or DA, you will be able to raise them as you see fit, however if this happens your spouse may leave you to "rescue her childs spirituality". You must be prepared for this reality. It is a tangled mess and should be criminal for anyone to have to go through this web of mines we must navigate. The best option, if possible is to keep family intact and wake your wife slowly. Doing this will be painful for you as you keep up a charade, but there are ways to bear it for the time nessesary.
Even If you stand your ground and your family disentegrates, comfort yourself with the knowledge that when your child gets older, they will appreciate the parent that LOVES THEM UNCONDITIONALLY FOR WHO THEY ARE and NOT WHAT THEY BELIEVE. And they have a parent that had the courage and integrity to do the right thing no matter the cost for their own welfare. Odds are as children grow and become dissatisfied with JW life, which they almost certainly WILL, they will appreciate and value that they have someone in their corner and another option for their lives.
However your child is still very young so you have some time.. Take it slow for now... We are all here for you OK?
Feel free to PM me anytime you like
With you in solidarity- BU2B