First timer with autoflowers

Easy week. Stopped with the nutrients. Now only water with a PH of 5.6. All in all satisfied with last week. They do start to suffer from heat because of the altitude. They almost grow against the lamp, no idea what I can do about this. The lady with the double trunk is still not in bloom, while the others have been in bloom for some time. Look at it this week how she does it. If she does not bloom next week, I'm forced to halve her. Although I know I can not do anything else, I just do not want to do it to her.