I feel your pain man. Our university of 40k people did the same thing “from on high” and we ran into the same problems in our lab. We only had 4 million files to move into a Teams share. Which, btw, takes about 5 weeks to “sync” to OneDrive, which is how we were expected to replace our workflow instead of a shared network storage drive our lab owned
q_q
There are dozens of us. Dozens!