How to make docker network create a "/29" by default?

Hello

I create many networks and the default setting currently make me hit the limit too quickly.

When I hit the limit, I get “Error response from daemon: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network

One thing I could begin with is to make Docker assign smaller pieces of network. For my usage, “/29” subnets are fine.

How can I tell Docker to create “/29” by default?