Driving test: Instructor says “right” or “change lane” at 60 km/h but there’s very little distance , what should I do?

I’m preparing for my driving test and had a doubt about a situation that might come up.

Imagine I’m driving on a main road at around 60 km/h and the instructor suddenly tells me to take a right or move to the right lane, but the turn or lane change is very close and there isn’t much distance to react.

In that moment, is it better to try and slow down and make the turn or lane change, or just continue straight if it doesn’t feel safe?

I’m worried about losing marks for not following the instruction, but at the same time I don’t want to brake suddenly or do something unsafe.

What do examiners usually expect in situations like this?

What actually happend :

I was coming from a side road and merged onto a main road. After merging, the instructor told me to speed up, so I reached around 60 km/h.

Ahead, the road splits: going straight leads up a bridge, and there’s a road to the right that goes down. To take that lower road, I need to move to the right lane.

The issue is, near that point there’s a taxi entry/exit area. Because of that, I couldn’t immediately change lanes I had to wait for a safe gap after the taxi exit.

Also, before that section, the lane marking changes from broken (where lane change is allowed) to a more restricted marking, so timing the lane change is important.

By the time I passed the taxi exit, the instructor said “right.” I immediately gave the right indicator, slowed down in control, checked my mirrors, and moved right but I didn’t do a shoulder check because I was worried I might cross the line or miss the turn.