Incorporating LM with DOMAN MATH

Hi all,
I have been doing LM with my 23mo/11mo since 3 months ago, but for the past 1 month they have somehow lost interest in it. I have tried all methods, customizing, singing songs, but to no avail. So, I have decided to take a little break from LM but still don’t want to lose this window of opportunity to teach them to love Math.

They love manual flashcards, and I plan to do Doman math with them using flashcards. Do you guys think incorporating the Doman method now from scratch, while taking a breather from LM is a good idea? There might be some overlap? Or should I just wait for another few weeks before restarting LM?

Any suggestion would be welcome!