I did some recent searching on rabbit snails because of your post and what I found is you need a male and female to have reproduction. The male rabbit snail passes his sperm packet to the female where she take it into her body and when conditions are right, she will then use the sperm to fertilize her eggs, sometimes one at a time but sometimes 2 or 3. She may produce 1 offspring per month for a number of months. The baby snail matures in her body in a gelatinous sac and she releases the baby snail in the sac into the aquarium where it breaks out of the sac and becomes free roaming.
I'm not sure from your side pics that you have rabbit snail babies. A front view of the head, tentacles and especially their muscular foot that extends from the shell when they are moving around.
I'm not sure from your side pics that you have rabbit snail babies. A front view of the head, tentacles and especially their muscular foot that extends from the shell when they are moving around.