Playing Double bass does not happen overnight and some people are just naturally faster than others.

I suggest all newbie DB players get a drum machine, some double bass books and double bass videos.  A teacher will help you figure out the patterns if you don't read so well.

Weights and the Isotonik systems are something that I have not perscribed to yet (I've been playing dbl bass drum techniques for 25 years) but I have thought about it for my left foot.

One really needs concentrated double bass practice at least 1/2 hour per day.  You may also play right foot patterns with the left foot during normal playing.  You need to learn grouping theory, heel toe, heel up and flat/floating foot-beater off head type techniques. Remember there is also 4 way independence and ostinato styles you may pursue.  Then of course, the blast beats- but please, learn your subdivision and practice with a click.  You will be able to gauge your speed and keep a log of your progress.

Newbie DB players should always keep one thing in mind.  Speed should come second and as a byproduct of SOLID and CLEANLY EXECUTED Dbl Bass patterns.

Good luck.