Jeremy Corbyn’s personal approval rating has slumped, and the recent local elections were an indecisive wash. But if you thought that the Tories could continue to tread water until 2022, the next time that elections would have to be scheduled, think again.
The Tories' determination to maintain a "hard Brexit' is about to run head-first into reality.

Corbyn has his own Brexit problems. Corbyn's political strategy so far has been to ride the fence on Brexit, and force the Tories to commit to a flawed strategy, rather than give the Tories a target to blame.
In other words, Corbyn is using Napoleon's strategy:
"Never interrupt your enemy when he is making a mistake."

So far Corbyn's strategy has been working.
The problem is that the Labour MP's are freaking and are nearly in open rebellion, even when their own position conflicts with their local voters.

However, Labour's Brexit problems are a molehill compared to the Tories' Brexit Mountain, and Corbyn called PM May out on it recently.

Theresa May is currently in the middle of what might add up to be her greatest mess thus far on Brexit. Her foreign secretary is calling her own customs policy “crazy” on the front page of the Daily Mail. The Lords have defeated her EU Withdrawal Bill fourteen separate times.
... Corbyn asked all the right questions, most of them short and to the point. There was nothing that could fairly be described as not so much a question as a rant for the purposes of a viral social media clip, which has become his standard tactic of the last year or so.

Instead, he simply asked, “Is the prime minister’s customs partnership crazy?”

And the house looked on as the prime minister’s lips moved, sound came out, but anything that might be described as the high ground opened up and swallowed her whole.

“We are leaving the single market, we are leaving the customs union, nothing has changed Lancaster House speech mumble grimace Florence I’ll tell him what’s crazy I’ll tell him what’s crazy!”
...
“How can they negotiate the best deals for Britain,” Corbyn asked, “when they’re only interested in their own futures?”

Boris Johnson’s countenance did not shift, but it did turn a touch more crimson. It is a question to which Theresa May knows she has no answer. She is in highly inconvenient thrall to a political psychopath.

Corbyn's roasting of PM May was just exposing how completely unprepared and ill-led the British government is for Brexit.
Politically, the Tories have no plan at all, and when the clock stops on Brexit they will completely implode. The Tories are so deadlocked on Brexit that they can't even talk to themselves.

Prime Minister Theresa May canceled a meeting of her inner Brexit cabinet scheduled for Thursday as she struggles to break a deadlock within her government about what Britain’s future outside the European Union should look like.

The UK is due to leave the EU at midnight on 30 March 2019, and the Tories don't even know at this late date what they want to happen?!?
It gets worse. Only this week, just 10 months before Brexit, the Tories finally got around to asking the most important question of all.

The U.K. government has asked business groups to map their supply chains to flag the areas of the economy most at risk if Brexit imposes additional trading costs on exporters, two people familiar with the matter said.

One of the people expressed bafflement that it’s taken so long for the government to ask for the data. It’s just 10 months until the country formally quits the European Union, and Prime Minister Theresa May’s Cabinet -- and indeed her Conservative Party-- is still procrastinating on what kind of customs arrangements to pursue post-divorce.

This is a political and economic disaster, not just waiting to happen, but firmly scheduled.
All Corbyn has to do is a) keep his MP's from losing it for a few more months, and b) have his own Brexit plan that actually makes sense and is realistic.
Because unless Labour's neoliberal Blairites save them, the Tory government is headed for an epic collapse sometime in the next 10 months.