PRF ..... Those are looking good , I thought mine made a jump.... your's really did. How hot is "extremely hot" where you are ? The last couple of weeks I transplant my plants.The temps were up to 100 degrees 3 or 4 days and darn close to that for the most part. The temps dropped into the 90-85 degree range and my plants are looking much better. It could be the drop in temps or that the plants are established and better settled into their new digs.
About your lawn ..... A lawn bowy or lawn girl.... rent a rider mower .... off road in-line skate.....
Peace & I hope you figure out the lawn thing ,
P. Dreadie