How to work with a hectic schedule?

I'm 16 and a junior in high school. With AP classes, clubs ( and being a cabinet member/ co-founder of one) and an extracurricular that will take up all free time (starts in a few weeks), I sometimes (actually, most times) forget to eat. I carry a granola and/or protein bar (Luna, zone, or balance, not the hardcore stuff) so I can at least eat something, but the fact that I'm not sitting down long enough to even remember I have it (or I'm sitting too long to even remember to get up because of homework). I used to just eat in some classes so I would have something, but it's now been limited to a little nibble in fourth period, right before lunch. How can work around my hectic schedule. I'll show you what it is now, and will be in a few weeks

Monday-Tuesday: cabinet meeting/ club meeting (all of lunch)

Wednesday-mock trial (all of lunch) after school colorguard practice

Thursday-semi free day, but lately another cabinet meeting

Friday-community service club meeting, then straight to mock trial after school colorguard practice.

And I'm normally up until about midnight doing homework

Any advice? I'm not dropping any of these.