If I was in DEP and dropped out when I was 17, what are my chances of being able to re-enlist?

My recruiter only gave me 8 days when I first signed up so I really didn't feel prepared leaving for basic. We never did PT or went over anything that would help me in basic that's why i got cold feet. However now i want at least 4 months in DEP to prepare myself if they let me in..I'm 19 now by the way.