I can think of a dirty way to define lambda for LambdaLR:
lambda epoch: 0.001 if 1 <= epoch < 10 else 0.1 if 10 <= epoch < 90 else 0.01 if 90 <= epoch < 120 else 0.001

or alternatively, you can maybe create your own learning rate scheduler by inheriting the torch.optim._LRScheduler class.