MIL pressuring to potty train

Su

MIL keeps asking and saying my 2 year old is ready to potty train. I know she is and I have a time when I will do it(January). We are planning on traveling this month so it would be dumb to start now knowing we will be in the car for over 10 hours one way. Plus December is a very busy month and I have another toddler and a 6 month old baby. She keeps telling my husband when I’m not around that she is ready to be potty train as if he is going to do it and then my husband is pressuring me to do it. Out of despise I no longer want to do it in January. I know is petty but it’s driving me nuts especially when I have said it multiple times that I will do it after the holidays.