Hey!
Everything looks like it's on track, you're doing a good job.
Buds are looking good, they should start swelling up and getting hard now..
That is correct my friend, spraying in flower is a big no no.
Anything with nutrients or chemicals could stay on your buds and affect the final result.
Even if it's water.. your giving more humidity take could increase risk of bud mildew.
Hope this helped, Good luck and happy growing!