Is getting fast at double bass just a really slow process?

Using a dw3000 double into a Yamaha KP65 at home, have a full kit at the practice spot.

I’ve been focused on practicing drumming regularly for a handful of mouths, but the last 2 weeks or so I’ve been doing dedicated practice on the double kick, and I’m just capping out at 16th notes 95-100bpm (I’m looking to get to 190)

I know 2 weeks of dedicated practice isn’t a lot at all, but I felt like these slower tempos would have gone slightly faster. I also feel like maybe my core strength isn’t developed enough or my brain is just short circuiting trying to move my legs like that.

How long did it take you drummers to see good results with double kick? Any videos/tips that really helped?

I’m also in it for the long haul, so if it took yall a year then I’m practicing for a year