college credits

okay so ill be starting community college next month, i walked in there wanting to do part time so i can work and stuff but i walked out a full time student i made sure to have morning classes (my last class ends at 2:50) but i absolutely hate getting off work at nights. i love my morning shifts . plus i have a daughter so i feel like i wont have time for her . so my question is .. if i be a part time student will that mess up the chance of graduating in 4 years (nursing) partime is 6 credits full time is 12