I'm not a whole lot more than a newbie myself, but the ammonia has to come down as close to zero as you can get it. I lost my first, precious betta that way.

I would change some of the water every day, probably 25% at least. Be aware though, that with Prime or Amquel+ your ammonia tests will still show ammonia, it's just been locked up by the chemicals in the water treatments.
Bioboost probably is useless; it may contain bacteria but it won't be the ones you need. The only way you can buy that is a product sold by MarineLand called Bio Spira. It has to be refrigerated or the bacteria will die, which is why products like Bioboost and Cycle aren't what you need.
Until your cycle is established, along with the Prime it would help if you'd add some VitaChem and Fish Protector to ease your fish through the frequent water changes and the presence of ammonia.
That's what's so cool about this forum - we're all here because we've learned something the hard way!