twice the amount as or than?

[Xiddling]

I'm going round in circles with a sentence that I need to write. Please can you tell me what you think it should be. I think it should be the first option, but a colleague thinks it's the second:

Bees produce almost twice the amount of honey than they did before
or
Bees produce almost twice the amount of honey as they did before

The production of honey has almost doubled since 2018.

More bees or busier bees?

@KittenKong

More bees or busier bees?

"This is not actually the real sentence - I've changed the subjects because it is a private document but it should give you the gist." :)