I find playing trombone helps a lot. I can feel body tension I was unaware of. The shoulders relax considerably and I am now aware of this when playing the trumpet. I then find relaxed chops just slowly slurring and use this to find the same shape on the trumpet. I used to start with way too much tension so had nowhere to go. I am even starting to play trombone music and use it to review the early videos of the course. Different instrument with different expectations as Greg says. It only takes a few minutes each day and can be part of my warm up or when I feel too tense on the trumpet.