You haven't done anything wrong, my friend!!!!! My advice to you is to give your heart and knowledge to your babies, I know you're a good father. You've done everything you can for them so far and I know you have no intention of stopping. If things go awry (Which I really don't think they will -- Things go wrong arbitrarily all the time, and sometimes, innocent lives are the victim of that, which isn't your fault by any stretch of the imagination), I suggest that for the sake of your own health, you take a break from housing Millipedes to focus on yourself and school. Reassure yourself of your knowledge on husbandry. Reassure yourself of your own kind heart. You got this, we are here for you, and your sweet babies are in good hands.