Form curve doesn't go down anymore

[Oleg_Gio]

Since last few days noticed that my Form curve doesn’t reflect real fitness- i.e. only goes up even with hard training sessions.

I dont think I have changed any settings.

[MedTechCD]

Form never reflects Fitness. It shows how ‘ready’ you are for hard work (upcoming event for example).
Fatigue is dropping, which means that your last 7 days load is lower then before. Thus Fitness stabilizes, because your 42 days total load plateaus.
Form is just the difference between fitness and fatigue and gives you an idea of how fresh you are.
Once again, Fitness/Fatigue/Form are a help tool for planning and do not reflect performance.
Tried to explain that here:

Fitness vs Garmin training status

The purpose of training is to improve performance. If you are focused on Fitness (CTL), you’re doing it wrong. The Fitness/Fatigue/Form is a good way of following up on planning and checking if you’re not going too hard. It isn’t telling you anything about performance. Once you reached your max for available training time, Fitness will plateau. There’s very little you can do about that. But that doesn’t mean you will no longer increase performance. Fitness is based on Load and Load is the resul…