Calories Burnt Through Dynamic Activities

Hi guys, so I was unemployed during the last 4 months, and successfuly maintained my weight with 2050 calories a day (200 extra on workout days).

I have just started working as a bartender with dynamic shifts, it could be 10 hours at some weeks and 25 on others, and I wanted your opinions about how should I gauge or basically consume my calories.

I know that in the end I should follow my weight changes and increasing/decreasing my consumed calories, but what do I do when the weeks are so dynamic? Should I ignore it and eat the same every day, or eat more on workout/work shifts day etc. ?