Converting to Catholicism, but having trouble?

I'm 16 and converting to Roman Catholicism. I went and had a meeting with the RCIA people 2 months ago, and they said the next cles were not until August. Poblem is, I've only gone to M TWICE in the past two months, even though i told them i would come every Sunday? What will they think of me? Should I be to embarred to even return?