The arrival of Endwalker is just under three weeks away, and that means changes for Final Fantasy XIV. For example, it means that a lot of numbers are becoming smaller. Your HP totals are getting smaller, the stats granted by equipment and materia will be lowered, the overall values are shrinking. This also includes your experience to next level will be smaller, but when coupled with smaller experience rewards, the effect should be invisible… unless you’re halfway between levels, because your remaining experience will be reset.you will definitely notice the experience reset.
Source: Official Site