Dilation suggestions?!

Any tips to thin my cervix/start dilation? I'm 38w3d and I have zero progress. I'm being induced at some point between tomorrow and Thursday due to gestational diabetes and heard it's awful to go from zero to 10cm forcefully. The doctor said if she had it her way she'd stay in until 41-42 weeks! We've been having sex like crazy and I cannot walk/exercise too much due to elevated blood pressure and severe swelling from the knees down. My feet are so swollen they are literally bruised!