France (and the British Expeditionary Force) took several major blows from the German forces, both land and air.
They were never really given a chance to get back on their feet again. They were bloodied, bruised and broken, and kept that way. There was no stable front line, all was chaos, leadership in total disarray.
Germany had operational control of airspace. France lost their best chance before they ever got started.
Turn that around the other way, if it had been Germany that got pounced on hard by the French.
Yes it might have changed things. But changed enough?
However fact remains that the French leadership was not ready for that kind of attack, in fact I doubt they ever would have been ready. No matter how long Germany gave them.
Look how long it took the US to recover from the sneak attack on Pearl Harbor!
And they really didn't follow that attack up, not like they should have.
End result would have been the same.
Hitler attacked the west at least 4 years sooner than he should have if he'd been any kind of military commander.
But in the end I think it would have made little difference to France.
However, if Germany had waited, they would have IMO had an even better advantage with tanks, and probably aircraft. Not to mention a much more effective Navy.
A lot of the things we point to that things seemed to "pivot" on, were in fact developed as a direct result of what happened. How they would have played out if you change the circumstances is anyone's guess.