Numbers too high now

I was diagnosed with GD and had to wait 2 weeks to get an appointment with them to go over my nutrition and info. During that wait time I was able to control my numbers and they were really good. Well, I had my appointment and even though they thought my numbers were great, they wanted me to follow their plan. I have followed it completely for the past 2 days and my numbers are now suddenly too high. Should I just go back to what I was doing? I had help before from my husband who is familiar with diabetes since his family has it.