Congrats on the baby boy!
The problem with the love bombing is that it's conditional, not that it isn't sincere. As for not christening him because he's not old enough to decide or commit, neither are 10 year olds but that doesn't stop the JW's from baptizing children who may one day decide, when they really are old enough to make that kind of decision, that they don't want to be a JW. Then they are shunned by friends and family alike.
I would tell you to run like the wind, but it isn't that simple, so I wish you strength.