TLDR: Is there any way to practice hitting notes on correct pitch on the trumpet ?
I got back into playing the trumpet two months ago after a nine-year break. I'm playing in a concert band (2 in autumn) and while I can play the songs just fine technically, I noticed (and was told) that I really had to work on my pitch (absurdly flat on low register, a tad sharp on high register which is... odd...). I have all the good will in the world to make this better but I don't know how to correct it besides just tuning my instrument and listening to our section while playing. Are there exercises that can be done to help getting correct pitch ?