Can someone check to see if I did this right please

maggiemay22467

I have taken the advice from my last post about my weight not moving. I have check to see what my BMR and TDEE are and this is what I got. I also read the road map. I am female 46 5'1 and 217 pounds.

My BMR --1665
My TDEE -1998
My BMI -41

It states I can eat 20% below my TDEE so should I be eating 1598. That is where MFP had me before I lost my 34 pounds. should I go back to 1598 to see what happens? MFP has me at 1440 now.