There are DO school SMP programs will accept (not interview) students into their DO program if your GPA is high enough. For example,
https://tourocom.touro.edu/academics/ms-program/
In that, if your GPA in the program is 3.45 or higher Touro will admit you into their DO program
You should go through each and every DO school SMP programs and find out the details. DO school SMP is very different from MD school SMPs. There is a DO school SMP will coach you for the MCAT test and that is all they do.
OTOH, med schools are not for the fainted hart, students admitted from those direct admit SMP programs are mostly weaker students and some of them has to repeat their OMS1 or OMS2 didadics(5-10%), some do flunk out.