When applying a sulfur product its best to wait 10-14 days before applying a petroleum based product, i.e. IPM. It becomes phytotoxic resulting in soft tissue chlorosis, leaves and/ or meristem begin to "burn". Likewise with applying most oils or sulfur based products with the lights on, or in the hot summer heat at, mid day.
Try applying a "tea" of your choosing 7 days post sulfur application. This will help dilute any residuals and feed the microbiome on the tissue surface as well. Do not apply a foliar feed with synthetic nutrients, you'll have the same effect.