Steering Committees are not there to discuss anything in detail, review any documents, or negotiate an outcome.
Steering Committees are there as a governance group to ensure the project is on time, on budget, doing the right things, delivering the outcome that was agreed in the business case and project scope, as well as governing the level of risk.
Every document should have been agreed before hand, presenting it to the steering committee is just to get confirmation everybody has been canvassed and all agree (or don’t).
Yes this means you need to meet with the stakeholders before hand.
Yes this means you need may need to run pre-steering committee workshops to discuss and confirm a decision.
A one hour steering committee meeting once a month is only enough to table and confirm or revoke the raft of documents that are required to govern the project.
Nothing more, nothing less.