Is thsi Doman method ok?

Hi,

I am showing my baby 15 words, 3 times a day for 5 days and then i retire all of those words and introduce new 15 words.
Is this approach ok or should i follow the strategy which doman suggested like

“Simply remove one word from each set that has already been taught
for five days and replace the word with a new one in each set. Your
child’s first three sets have already been seen for a week so you may
now begin to take out an old word in each set and put in a new one.
Five days from now, retire an old word from each of
How to Teach Your Baby to Read 235
the five sets you are presently using and add a new word to each set.
Do this every day.”

Please advise.

Thanks

I would say you should retire two cards and introduce two new per Doman