Help with geckolib attack animation/damage sync

Sry if I misspell or if I write a sentence the wrong way, English is not my first language. 

So I recently started modding minecraft but already came by a head scratching problem. I use geckolib puglin to make custom mob animations and one of the options this puglin gives you is to make your own custom attack animation, I thought it was a cool idea so I made one. The problem is the animation starts more or less 1 second after the damage has been dealt, I tried looking for solutions everywhere but nothing works for me, I just don’t know what to do anymore. 

If is important I use MC 2023.4 and my the 5.2 version of the Nerdy’s GeckoLib puglin.

PLS HELP