Its been a while since i tinkered around but i think firstly you can try directly booting into twrp recovery and see if that's working.
For some phones overwriting the recovery straight away doesn't work they will just let you temporarily run custom recoveries.
If that's the case then you can figure out for your specific phone how to overwrite the stock recovery permanently.
Again i could be completely wrong but you can give this flow a try.
Its a word play on "stationary" i.e. not moving and stationery i.e. writing materials.