Well it remains very hard for me to predict how far they will have to go this autumn/winter, because that depends just how bad hospitalisation rates get.
Certainly given that they were so slow to act even in the era before vaccines were available, we should probably expect them to be even slower and more resistant to imposing heavy stuff this time round. Especially as the political consequences for them are probably worse this time, and plenty of people expected too much from vaccines. But there are limits as to how far even they can push things. Since we are almost into the half term holiday zone (already there in some places), they can also use that as an excuse to wait and see what difference it makes.
Since a lower than necessary uptake of boosters is one of their concerns that could threaten their entire approach, they may feel the need to be quite heavy with the amount of concern and fear they put in the messaging now, in order to push more people out of the complacency zone and into the booster queue. But given how deliberately weak and irregular their messaging has been for months, even bothering to hold a single press conference probably qualifies as getting tough by their standards.