When should I ask for a release?

I had a talk with my assistant coach ( womens basketball) and asked how could I earn playing time. I was told I practice well and I’m not doing anything wrong. This confuses me because I don’t get in at all despite practicing well. Should I go ahead a look into transferring and when is a good time to ask for a release? I will be a junior next year and I am currently playing at a NAIA d1 school.