New indoor grower need help

Getting ready to go into flowering having issues with humidity don’t have dehumidifier any suggestions would be helpful



When do I do this before I flip?

Start now, finish lollipop by 1st week after flipping lights

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How long do I keep in dark before flipping?

I just skip one day then allow plants to come back the following at a 12/12

Thank you

When I flip the lights do I go straight to red or mix red and blue?