Hard to give ball park figure but..
I'd also say 300g carb refeed is a good start if you are consistently losing +- a pound a week. If you are dropping more than 1-1,5 pounds week and getting very depleted you may need more up to 400-700g (How quickly you eat through your glycogen stores depends on your metabolism/bodytype, how intensely you train, amount of cardio etc) IMO until you are shredded you don't want to over carb each week when cutting. Or else you lose too many fat loss days...when in a fat loss mode, I try stay slightly depleted just have small "top up" days so I can keep functioning,training hard and keep my thyroid happy. once you are really shredded you can get more aggressive with carb up days.