Methods, systems, and devices for wireless communications are described. A user equipment (UE) may generate first and second sets of feedback bits associated with first and second sets of downlink transmissions, respectively, the first and second sets of feedback bits scheduled for transmission in a first set of uplink symbols. The UE may identify, based on a change in a format associated with the first set of uplink symbols, that only a subset of the first set of uplink symbols is available for transmission of the first set of feedback bits and the second set of feedback bits. The UE may determine to defer transmission of one or both of the first set of feedback bits and the second set of feedback bits to a second set of uplink symbols based on availability of the subset of the first set of uplink symbols and on a deferment scheme.