Withheld info on mortgage application, that I am leaving my job

Military member, last day tomorrow.

Applied for mortgage without telling them I am starting a new job, becuase it's a salary drop and private sector.

Application was approved yesterday, signing papers within a few days and all the notary stuff after that, with occupancy of the house on 10 Jan.

My last day at work is tomorrow. And I will be starting my new job in January leaving time for packing, moving and then the holidays.

Can I get in serious trouble or lose my mortgage?