Example embodiments provide a method for acknowledging switching of operation modes for a client device. The method comprises receiving, by a client device, a first indication comprising at least one of a first time duration, a period for repeating the first time duration or an indication of a list of at least two operation modes for the client device. The client device may be configured to receive a second indication comprising instructions for the dynamic switching of operation modes based on the list of at least two operation modes. The client device may be further configured to indicate the selected operation mode to a network device. Devices, methods, and computer programs are disclosed.