if you dilute your extract with a little MCT (1:1 up to 5:1) and homogenize that, it is a lot easier to get the goodies well dispersed in your gummies.
an immersion blender does well for the diluted extract into gummy mix (thanks @MillerliteRN)…the right weapon for getting the extract into the MCT depends on scale, budget, and regulatory environment. you can get the job done with a dab tool if you’re playing with a couple of grams for personal consumption. for larger amounts you can use an oster blender. see: Biomass Grinding at various scales? - #22 by cyclopath. or a high shear homogenizer.
if you’ve got money to burn & are aiming at cGMP then dual axis centrifuge is a really fun toy…Homogenizer temp settings - #6 by cyclopath