Please read car help?

hastily agreed to have lessons in auto although from much pressure from ppl ive decided to learn and continue with a manual car i know it will take longer but whats the rush eh,,basically what shall i say? to my instructor when i ring him 2 morrow...i feel a bit stupid agreeing to lessons so hastily without thinking about it..the auto lesson was only a trial really do u think its good to persevere with the manual ca rlessons?