In the short term, to avoid No Deal and the consequent disasters predicted by Yellowhammer. There's no realistic time to do anything else, and as yet no consensus as to what to do.
In the medium term? I refer the honorable gentleman to my previous answer.
First of all, Johnson has to go. Either being replaced by an agreed replacement in a confidence vote, or via calling an election - but only after the extension has been agreed and is solidly in place, which is why it was denied by MPs very recently.
Then there will have to be an election or referendum. No progress can be made until there is a majority for a specific, workable way forward on which MPs and the EU can agree. That cannot happen until enough supporters of unworkable plans have been removed from Parliament, or persuaded to give up and quit their parties.
The EU is not going to budge on single market integrity and the Irish border issue. People need to learn from Greece that the EU is a much harder negotiating partner than the British press claim.
Similarly, preparing for No Deal is impossible without admitting the real consequences to the public, which would be tremendously unpopular. So that's not going to be advanced either.