@godisworking101 I don't think you should need 15 reps to learn technique with barbell movements. With dumbbells I can understand if the weight jumps are too big. Going from 15s to 20s is a huge % increase. But if you've got loadable barbells, you can small increases that shouldn't alter your technique. Maybe you need to just focus more on technique in general. Use slow eccentrics, pauses at the bottom, etc.
But in general though, without changing anything, I would keep the weight the same, and just take sets 1 and 2 to higher reps. So instead of saying "everything sets of 10", do "everything 10-20 with 2-3 reps in reserve". Going to failure is probably overrated for you at this point.
And if your first set is over 20 reps, then definitely increase the weight, at least on the first set.
What do you think of that approach?
Skullcrushers might need to be lighter than you think. Overhead extensions are great, keep those too. If you have an ez-curl bar, I like it for those. Dumbbells work too. Check out this video: