Feeding live or f/t is entirely up to you, it's all personal preference. If they were fed f/t before you got them, they should be just fine and take them without hesitation. If not, then it may take awhile to switch them over. I feed live out of convenience...they're easier to keep, I don't have to deal with the nastiness of thawing out dead rodents, and I can control what they eat before becoming food. If frozen rodents are easier for you and you like them better, then by all means choose those. Once you get your babies eating, they should take whatever you want to give them.

Baby ball pythons are easy compared to baby humans...my husband and I have already decided no more kids, just more animals. lol!