I have always driven stick. 45 years. Sounds like you are gettin fliud into clutch most likely oil.
IF it was the pedal, or the hydralic system, the clutch would not release.
The opposite of your problem. (the pedal to the floor would not be enough to release the clutch)
So the opposite is (sorry to say) always more serious.
It may be the release assy is failing, or some part of the clutch release broke insde, so it is blocking the full recontact of the clutch.
But the usual is the clutch plates are damaged by fluid (oil) leaking into them, and if it is real bad, means a LOT of oil is in there.
Sorry.
So IMO either a failed clutch release with some broken part messing up the reingagement, or a leak into the clutch plate.(could be from Tranny or engine)
This is just the opinion of a 62 year old lady, so your opinions and experience may vary. Actually hope I am wrong.