You want to up your phorphorus and lower your nitrogen for flowering.
Some bone meal will help add phosphorus, and get a high phosphorus
plant food your (P) level is your second numer on the guaranteed
analysis 15-30-15 is a good one to get for flowering the 30 represents
your (P) level.
Get some mulch to keep it from drying out spread it around the base
of the plant if its been hot without rain lately where you are. Its better
to have a plant that isnt getting enough water than one that gets to much
water.