Congratulations on reaching your goal! That is very exciting!
:
I was a little scared about adding calories once I hit maintenance as well, but I got used to the idea pretty quick once I actually started eating more (it was so nice to be able to eat a little more).
In terms of how many calories you add, I don't think it really matters that much whether you start from where you are now or where you were at a month ago. I think the idea behind just adding 100-200 calories per week is just that you want to increase your food gradually. If you suddenly add a lot of extra calories to your diet, I guess maybe there is concern that your body might not know what to do with them and start storing them as fat. And significant changes in diet can cause you to retain water, which isn't necessarily bad--your body will release it eventually once it adjusts--but it might be stressful for you to see that water weight on the scale. Finally, sometimes drastic changes in your diet can be disruptive to the digestive process and can cause unpleasant side effects
.
But there's not that much difference between what you were doing then and what you are doing now, so I'm not sure it really matters that much (but I'm not a doctor, nutritionist, or anyone else that has any professional expertise, so take my opinion for the amateur one that it is). I would probably just add 100-200 calories to what you are eating now, since that would clearly be the safest approach. But if you really aren't happy with what you are eating now and want to add another 100 calories or so, I don't think it would cause any lasting damage.