Feeling lazy and not wanting to do anything is very typical early in sobriety. It is for me anyway. I am on day 17 and still pretty lazy. Not going to AA meetings as much as I probably should be...taking naps, eating junk food, etc. Your mom has to realize that your body is still healing and it will take a lot of time and you will have up days and down days. It's all part of the recovery process. No one should rush anyone's recovery. Do it at your own pace. Take baby steps. Don't set the bar too high. Even if you have days where you feel blah and do nothing at all, as long as you stay sober, don't worry about it.