Great question!
Practice can be tricky (and frustrating if you don't know how to do it, trust me!).
Practice is all about learning how YOU interact with your instrument. It can be weird, it can be challenging, and you might want to throw your instrument against the wall sometimes (don't do that), but ultimately, it is extremely rewarding.
For beginners, we ask for a minimum of 20 minutes a day. As you progress, the time will get longer, because you'll have more things to work on. Professionals will typically practice 3-5 hours a day.
What I would do first is organize my practice. Depending on what is being worked on, a practice schedule might look like:
Level II:
2 min - Breathing exercises (in for 4, out for 4, 2/2, 1/1) using a metronome (quarter = 70)
5 min - Long tones - just play each of your first five notes as beautifully and wonderfully as you can, always looking for a way to make it sound better and feel more easier (first few lines in the book)
2 min - REST! It's important to rest after playing for a while, especially during the first few months of embouchure development.
5 min - Familiar songs - look for songs that you know, maybe you know the words or have sung them before. See if you can't make it sound and feel just as effortless with your instrument as you can with your voice! Also, practice rhythm counting for tricky rhythms! Don't just be satisfied with sort-of playing them; make them your best!
5 min - Assigned music - focus on saying note names/counting rhythms/singing on solfege/saying fingerings to help solidify certain passages in our music! Play the Mozart game (5 times perfectly, have someone keep track for you!)
2 min - REST!
5 min - Fun music - music stores sell all sorts of fun music books like movie themes, Disney songs, pop songs, etc. Have fun with your new instrument and practice some of the skills that you learn to help you learn how to play the songs that you like on your instrument!
If you're having issues with finding time to practice or are confused as to how to practice, let me know, and I can help you!