I just started working on body recomp too and I've been mainly focusing on eating at maintance.
To get a rough idea of my caloric goal I js looked up my maintance for my height, weight and age according to how much activity I did throughout my day (average daily steps, weekly resistance training frequency, etc..)
I got a range of 2800kcals to 2900kcals for "maintance". After 3-4 weeks of eating like so, my weight still dropped 1 kg which indicated a defficit so I bumped up my intake to 3100 and currently it has been keeping me at the same weight.
So in a way you need to track your stuff (mainly weight, each week I calculate an overall average)