Nutritionist or dietitian please help!

So long story short i went to the dr. And had blood work done. Results came back an i got the call saying i need to eat low sodium, and low sugar. An absolutely little to no foods that contain iron. But they couldnt tell me what to eat. Ive tried to get in touch with a nutritionist or dietian an they either dont answer or are not covered by my insurance an noone wants to tell me anything without an appointment. I need some type of way of eating to follow weather it be vegan, keto, vegetarian or whatever. Ive been living off of greek yogurt. rice, chicken an veggies. I know i aint suppose to have any red meat, leafy greens, an need to watch sodium intake. But how much can i have? What do i do? Can someone please help?