slowly but surely

with gradual progress, steadily, and consistently over time

Slowly but surely, she improved her fitness by sticking to her workout routine.
The project is coming along slowly but surely, and we’re on track to finish by the deadline.
Slowly but surely, the garden started to look beautiful after months of work.
They built the house slowly but surely, taking their time to get every detail right.
The team is slowly but surely making progress in resolving the issue.