@isaiah9six I follow what my routine says, which is typically a range. For example 3 to 4 sets of 13-15, 10-12, 8-10, or 5-7. Based on the rep range (and the rest time) I adjust the weights.
The GOAL is to try and hit 15, 15, 15 (for example), but you want it to be a struggle at the end. So...