Can I build my mix faster?

Hello everyone, I have a question, so for mixed voice ken says to first build chest voice then head voice then the passaggio. Is it possible to work all three parts at the same time (training all three in one workout) or should I focus on one register at a time??
Comments
Focus first on building a powerful chest voice. If you skip ahead especially without guided instruction to make sure your head voice is built as it should be you will miss fundamentals that will cause more issues later.
Following step by step is essential.
Post a vid of your LAH AH exercise and tag us to critique!