It will soon be 3 months that I planted leaves from my African Violets, and I still have NO appearance of "babies", is it normal to take this long for a leaf planting?
No you should see new growth with in two to three weeks gently pull the soil away from the leaf and see if theres signs of new growth
or you could gently turn the pot over and pull the soil away to see if there are any roots which would meant babies on the way Good luck