If the deficits not particularly aggressive and you’ve not been in a deficit for months on end it probably won’t affect you as much as you’d think.
If you go into work outs with that kinda defeatist attitude it becomes a self fulfilling prophecy kinda deal.
Usually a less aggressive deficit won’t hit you as hard but you’re already doing that.
So next on the list we have meal timing/ food composition. Pretty much take pre, intra and post workout nutrition seriously. You’ve limited macronutrient resources as is so best make use of them to fuel your workout especially carbs. I go slow release carbs and protein pre workout with minimal fat. Intra workout if I can be bothered it’s carbs. Post workout same as pre workout.
Optimise fatigue management in other ways to make up for less calories i.e. pretty much sleep more. You can get away with stuff in a surplus but you’ll need every little bit of recovery you can muster in a deficit.
Maybe a bit of caffeine… like 1g should get you right lel