He's tried to get it done by voting down the WA and resigning from cabinet. This practically forced May to step down and have a Tory leadership contest (which is what he wanted), wasting even more time. He's tried to push the debate back as far as possible by proroguing parliament. He's held back the Withdrawal Agreement from parliament to scrutinise.
The only thing you could argue he's done to get Brexit done is try to push through the WA on a speeded up processes, but even that when put to even slight scrutiny is disingenuous. He went for that knowing it was very unlikely to be agreed to. So what did he do? Threaten to pull the WA entirely and demand an election, which will take another further month from the timetable. Not because it helps Brexit, but because it favours him.
Didn't think it'd matter anyway, because you were certain the EU wouldn't grant an extension?