Timing and Precautions for Trapezius Muscle Botox for Brides-to-Be Before Their Wedding

I am a bride-to-be getting married this fall. I have selected and tried on wedding dresses, but I am very concerned because my trapezius muscles on both shoulders protrude significantly, possibly due to my heavy computer work. This makes my neck look short and my shoulder line look unattractive when wearing off-shoulder dresses. I want to wear off-shoulder or strapless dresses with confidence on my wedding day, so I am planning to get trapezius Botox at Maypure. I have heard that it takes some time for the muscles to soften and the lines to refine after the injection. I am wondering how many months prior to the wedding date I should get the injection to show off my most beautiful shoulder line. Please also let me know what precautions I should take when lifting heavy objects or exercising after the procedure.