is it ok to take more

my wife and i are taking acid right now and it’s my first time (nowhere near hers) but i took a smaller portion to not freak out but i feel like i need to take more. wife says acid doesn’t work that way and you’d have to take it all at once and taking more won’t do anything (but she says she’s not sure if that’s true she only takes it at festivals with a plethora of other drugs)

is this true?