Hi buddy!
The soil you are using seems to be not the most suitable.
What type of soil are you using? Does the pot have drainage holes?
Sweet smokes!
-Apolo
Hi buddy!
Personally, I would recommend that you use a fertilizer for flowering with high phosphorus and potassium content.
You are currently using a flowering stimulator, so your plants will not have everything they need. They currently need a higher content of phosphorus and potassium for flower growth. 😉
Sweet smokes!
-Apolo