Go slow,,actually the children can acclimate and integrate into the real life more easily. Going slowly, one day at a time for sure. If you are not going at all and their father is not that active, then the kids find an open window in their lives. Little by little. Encourage them in sports, if they are inclined. Mine were very active, sportsy so all that came natural and a healthy diversion for us.
Always encouraged school and extracurriculars. So none of them were ever baptized. Again, their dad wasn't hardly active so was relatively easy for us. I always reminded them to be respectful of their dad and how he believed and he didn't push against things much, except holidays, of course. All five kids graduated college too and are grateful for their freedom of mind and heart.
So many best wishes in the best part of your life ahead and for your children to be able to look back on their youth with joy, no fear of destruction, and their mom having unconditional love for them.