Hello and welcome to HCM
Don't worry its nothing serious. You diet chart contains high fiber diet which is good at your age. These type of diet helps in cleaning up of digestive systems and reduces gastric discomfort and constipation
. Increase in the frequency of stool is due to that and a little bit due to increase amount of food intake. So in my opinion continue with same chart and you will have normal feeling and digestive system as your body will adapt to your new schedule soon, it may take few more days.
Hope you got your answer.