3 weeks into flowering and need to change the cycle

im 3 weeks into flowering ,winter is over i did 12/12 starting at 10:30 am. to 10:30 pm and spring has come now its too hot in my room with my cool tube it now 30c. if i change it from 10:30 pm to am will that fuck up the plants or i should just finsh what i started

finish it the way you started. 30c isn't that hot my temps in summer are 40 to 50c

I dont have too much experience, but what seems like a good idea (which could mean its an awful idea) is to move the time back an hour a day or maybe an hour every two days so that in 12 or 24 days you will have the light cycle you want. Then again, I don't know how good of an idea that is. Maybe someone with more experience will chime in. Hope that helped.