When you are using cellular fat, rather than dietary glucose, for fuel, it's not only normal, it's necessary for LDL to rise, as that's what is used to make the fuel for the other cells.

LDL has gotten an undeserved bad rap, anyway. It's LDL that is a necessity for the function of your brain, for example. There are good types of LDL, and bad types, and the tests we are given don't differentiate.

Ask your doctor to give you another 6 months and retest; you will be much more in the ranges that he thinks are good.