0-100 pushups

[Mattomite]

I'm new to the forums so forgive me if this is posted in the wrong spot.  Ive been doing 0-200 sit ups, 0-100 push ups, and C25k all on the same day (in that order) since I was cleared to get back to the gym post surgery after 3 months off.  I'm on week 4 day 3 of all of them, and I could barely finish the last set of push ups tonight.  Did 10, and ran out of gas.  Short 15 sec rest and did 5 more, short rest again and finished the last 3....my question is do I repeat the day since I couldnt do all 18 in one shot or do I move forward?  I don't want to cheat and would rather repeat it to say I did it right.  Any thoughts?  Thanks!