Rate Limit In bridge based on Mac address

I have the network below:

All the routers are mikrotik , what i would like to do is to rate Limit Client 2 based on Mac Address (client 2 and client 3 have access through same Antenna) The only way to do it is on router 8.8.8.226 , there is configured as bridge for uplink wireless antena , wireless antenna for client2-3 and link for client 1, the only way i think to rate limit is based on mac address of client 2 router , can that be done ? or do i have to chance all my configuration,
if i > bridge > filter > setup forward rule based on client 2 mac address i can drop all packages but cannot rate limit (for example marking packets and queue- tree or simple)

any ideas how i can do this ?