No, it isn't. The import changes were only partially introduced from January 1st. Some of them have been delayed further until June. The impact of those changes haven't been felt yet, and they will be negative. And the Tories are still trying to renegotiate the NI Protocol that they sold to the electorate was "oven ready".
Brexit is far from over, that's yet another lie that our Brexiteers would like us to believe. Then they can try and detach the ongoing problems from actually being related to Brexit. Have you not been keeping up with what's going on in the country?