First of all, focus less on church growth and more on saving souls. There is a huge difference. The priority is not about how big your church is but about caring for the lost and saving them from hell, no matter which church they end up in. True church growth comes when the church moves in power: healing, deliverance, signs and wonders. That's how Jesus did it and that's what we need to do: healing, deliverance, signs and wonders. So church growth is not something we do -- it's something God does. Matthew 16:18-19 And I also say to you that you are Peter, and on this rock I will build My church , and the gates of Hades shall not prevail against it. 19 And I will give you the keys of the kingdom of heaven, and whatever you bind on earth will be bound in heaven, and whatever you loose on earth will be loosed in heaven.” Jesus said He will build the church -- not us. Our job is to bind and loose.
Firstly, homeschool all the way. Secondly, have his father be more involved in his life. From conception, it is the man who determines the sex of the child -- X and Y chromosomes. This is why when a man validates the gender of the child, the child believes him -- "You're my little princess," or "That's my boy!" is so important for gender assurance at a young age. Read, "Wild at Heart" by John Eldredge to understand about masculinity and how it works and what to say and not to say to your child for gender assurance. What the mom says somehow has less of an impact than what their dad says. I'm not here to judge but this behaviour is common with single parenting (no father) and absent or disconnected fathers.