Sorry for cruel drawing

I`m on the go now but that is correct
Here is the graph I drawed its the same nomnom did
View attachment 343831
Let me share you the exceptions :
Depends on the SEO type i mean SaaS , News , Blog etc. layout in general should be the same
What could be the exceptions ? you can do un-effected articles or pages directly A-C (But not recommended !! just sharing as an option if you have good traffic page)
*307-302 redirect can be implement as exception
OLD Site (A) is your current site
Bridge Domain (B) the one domain you gonna use just for redirect but purchase something with same branding you can use later as PBN also ! after solved the rank issue
NEW SITE (C) is gonna be your new money site instead of A you will kept going with this from now on.
Please be careful about the B and C domains make sure shouldnt be used before check wayback machine !
Also food for thought for B (again not recommended cause I didnt tested before but if you do please let me know ) for B start with expired domain ? maybe
Thanks