But why?How is it a u-turn?
The policy has always been to let things continue as normal until cases increase. Then institute gradual measures for containment. Then gradual measures for delay. Then gradual measures for lockdown. And finally a full lockdown.
All those stages are going to be met at some point. It won't be a u-turn at each.
Do a lockdown now, there are just a few thousands of infected people, so it is easier to manage. Do a lockdown in 2-3 weeks and there are hundreds of thousands of infected people, so much more difficult to manage the spread.