No, as ‘probably’ is one of the doors of OCD. Saying it once is sufficient.

I was in between two prostrations, sitting. I then said rabighfirli twice, but on the second occasion I realised I probably didn’t say it correctly while I was already going down for the second sujood. Whilst I was doing this I corrected myself and not previously whilst I was in the sitting position. Do I have to repeat the salaah?