The fry I have are over 3 weeks old now. I get the live food from my campus wet lab (baby brine shrimp), they have been fed these for weeks now. Within a few weeks I will not have access to these food stock due to break. I have been crushing up flake dust and sprinkling it into the fry enclosure, some curiously eat it then spit it out. I wait 10 minutes before putting in any live food. Any tips on how to ween betta fry off live food?