I have found that the more prepared the enclosure it, correct temp, humidity, clutter, hide size, etc. the more rapidly an animal will settle in an be prepared to eat.

I typically have an enclosure ready to go if for example I am heading to a reptile show and know I will be coming home with a new addition. I feed on a rotating schedule based on weight gain priority which means I'm offering rats (not necessarily to the same animals) at least every other night.

I have come home with new animals to prepared homes 3 different times and each time after about six hours in their new home they have eaten (I use readiness to eat as a measuring stick of how comfortable the snake it).

Since you're still ironing things out and there is no danger of your 1k gram animal starving or anything I would allow some time after everything is set up correctly before attempting to feed.