When I initially started playing chess I used books and board. Later, when I started using chess software, I think my game improved a lot for a time, and I got a rating of 2000 at chess.com
But I am now faced with the following problem: when I recently went to a tournament I was completely blank over the board, and I was feeling that this is a bit different. I was not able to calculate moves.
The question is: how should I maintain balance between engine practice and over-the-board practice?