Realistic weightloss expectations are 10% of the amount you wish to loss during induction and 5% of the remaining weight to lose each month after.

It looks to me like you have exceeded the averages...

This isn't a quick weightloss diet.

This is a way of life where you eat until satisified and gradually get to your goal weight.

You can try to cut the aspertame and see if it triggers something but... you don't have much to lose so it will go slowly for you.

All the best.