Hi those plants look ready for budding.I also grew Bubblegum for my first grow but it was hydro it took my plants about two weeks( 14 days or so) for mine to start budding once i cut the lighting period back to 12/12.But remember to get that light as close as poss cos they are know to strech.Once budding they will be ready in about eight weeks.Anyway keep up the good work and all the best Mrx