i always keep lifting weights when i am trying to lose weight just change ur routine. lighter weight, higher reps and just add more cario and make sure u are on a lean diet. diet being as important or more important than the first to. without a great diet u still wont lose like u want.
fish,chicken,plenty of water.
eat at least 5-6 times a day small meals.
on the lifting stick to basic movement dont need anything fancy.
good luck.