Progress is slow but yes.

虽然进展缓慢，但确实如此。

youdao

Later I studied on my own as well, but my progress was still slow.

后来我也自学了，但我的进步还是很慢。

youdao

We are making slow but steady progress.

我们虽然缓慢但是在稳步前进。

《牛津词典》

A United Nations peacekeeping force has helped return stability to the country after a rebellion in 2004, but economic progress remains slow.

VOA: standard.2009.09.09

But progress has been slow, and Gud-Chantier has taken matters into its own hands.

VOA: standard.2010.04.01

But progress is slow, which has opened the way for Mr Mehta's overall redevelopment.

ECONOMIST: Light in the darkness

There are plans for a hotel-and-entertainment centre near the casino, but progress is slow.

ECONOMIST: Urban affairs

Some big firms showed interest in taking her product to market but progress was slow.

ECONOMIST: A peculiar product��s peculiar route to market