I'm a relative newbie (7 months on trumpet now). I found this routine to really help, so much so I'm actually amazed at my own progress (compared just to myself when I first began - could barely squeak out E on the staff, can now hit B/C above the staff pretty solidly). Wed/Th/Fri - maybe 30 minutes a day total practice in 15 minute chunks (mostly because I'm fidgety and can't sit still much longer) - long tones, light lip slurs, easy chromatics, a few etudes Sat/Sun - have more time so I'll do maybe 2 hours total per day, again in 15 minute chunks throughout the whole day. This time though I'll really hammer away at lip slurs, "climbing chromatics", scales, etc. so that on Sunday my lips are pretty tired. Mon/Tues, sometimes Wed - no practice whatsoever. I'll then come back the next day and I can really tell a difference.