Then, there is POS implementation at end of Feb or beginning of March.
No that isn't happening in Feb or March.
What's your source for that?
Ethereum hit's it's max coins for the non-Proof-Of-Stage stage at 90 million around that date - then the Ethereum Foundation get's into legal obligations to do a POS.
There are only 3,558,999 ETH left for the Proof-Of-Work period.