Dedicate the rest of the summer to showing pushups who is the boss.
Test your max reps (RM) on day one.
Take day two off and start the pushup program on day three. Do no other pushing exercises for the next month.
Train 5-6 days a week. If you are sore, skip a day.
Do a warm-up of choice before the first set of the day.
Every training day do 9 sets spread throughout the day. Rest for a minimum of 15min between sets; there is no upper limit on rest.
Each training day roll a die to determine the percentage of your max reps: