First, find out WHY your soil has the pH it does. Was it just over-limed recently? Is alkaline
irrigation water affecting the soil pH? Or, more likely, is your soil alkaline?
If you have alkaline soil, even heavy applications of sulphur won't have a lasting effect on soil pH. To keep the soil pH low, you'll have to re-apply sulphur every few years, much like farmers with acidic soil lime their soil periodically.
This study applied 10,000 lbs of sulphur per acre and it only dropped the pH from 8.0 to 7.5 and it was back up to 7.8 within 5 years.
https://www.agvise.com/educational-articles/does-elemental-sulfur-lower-soil-ph/
Suggest you focus on growing crops that will thrive in your soil's pH. Alternatively you can add organic matter which will bring the pH closer to 7 by increasing the CEC of the soil. Again, you will need to add a lot of it, every year, which can lead to other problems. Compost has a NPK of roughly 1-1-1, while most plants use these nutrients in ratios from 5-1-1 to 10-1-1 so it can be easy to over-fertilize the soiil, especially if it has much clay in it, which will hold the excess K (potash), potentially leading to very high levels of potash over time.