Then I suggest you eat more, and eat more carbs also if you are going to increase training volume in the middle of a season.
The in-season is not a time to make drastic progress in your physique or strength/power. The reason is obvious...you have tons of games and wear and tear.
That said, your best general approach is going to be gradually increasing volume and reactive exercises like jumps, bounds, power cleans, etc. as well as working on lateral movement. Then I would deload about 8 days before the tournament and keep eating a surplus (healthy foods). The last 8 days before the tournament I would be focusing on jumps, bounds, cleans in low volume and do 1 squat session also of low volume. Essentially you need to cut back the volume and intensity that you built over the 8-10 weeks but NOT take a bunch of days off to get rusty...basically just go in and get "primed" but don't wear yourself down. A glorified warm-up basically.
I'm still not a huge fan of ramping training volume up in the middle of a season. But if you do, eat a LOT of good healthy food and carbs to fuel recovery. Also pay attention to vitamin status, it can help with endurance or prevent cramping from all the work you put in (magnesium supps, calcium supplements, and salt intake, along with potassium rich foods like spinach)