Is there any way to "Cheese" or make FNaF 1's night 7 (20/20/20/20) easier?

I just finished night 6 with 5 attempts using strategies I was able to gather. I used the 4B/East Hall Freddy stall trick mainly, since Foxy wouldn't move and Freddy blocked Chica 90% of the time from getting to the door. However, I had run out of power by that time. Considering I clearly don't have the best power management, I ask for tips