I would wait the 7 days definitely and monitor her weight as soon as you get her close to or at 750-1000g back her feeding up to every ten days when she maintains her weight for at least 1st month then move her to every 14 days since she is 2 years old feeding her every 7 days is to boost her if you keep her on that schedule permanently it would be like power feeding her throughout her life shortening her life span to do it on a short term basis for her health is ok but not on a regular basis by the time she reaches 750-1000g she should be on smaller large rats