Hello,
I have work on young of B. d. melanota and B. cyanea and hey are not easy to intereste to pinks too. But now I use a method which gives good results but lot of work before to obtain some snakes which eat alone (8 month for the firts species and 16 for the second). If you want contact me directly and I will translate the method if this can help you.
Good evening
Franck