When optos add cyl to the prescription, they reduce the sph on the other parts of the glasses. (When they add -1D cyl, they reduce -0.5D from the sph. This is a standard opto recommendation to do.)
For this reason you may feel that you are stagnating with sph while cyl is improving. Just because you are reversing the standard practice.
If you want to get confirmation if it is the sph or the cyl that needs more work on with the current glasses I recommend testing vision with the below picture. I find it more helpful than the astigmatism fans.
Start from a near distance where all 4 sets of squares or circles seem to be clear. Do it with 1 eye at a time. Increase the distance and see if it is all 4 that go blurry at the same time or one of them gets blurry or greyish much sooner than the others. If the latter that confirms the cyl reduction is still in progress.
To be honest you worked on your astigmatism in the past months. This means that it cannot be guaranteed that the opto will measure it correctly either. Also there is the risk that a transient status gets measured and corrected = fixed in glasses just because your astigmatism is moving from the old value to a new value.
If you go and get it checked, take the results with healthy scepticism since optos don’t know how to allow for myopia or cyl reversal in their measurements