There is benefit of cycling due to fully emptying of the receptors, making them more sensitive to the estrogen. However, this is accomplished by the pill on a daily (24 hrs) basis, it is important to take the pill on the same hour each day for the effect of cycling to occur. In the case of injection, there is no daily cycling, so cylcing has to be on a monthly basis. However, the effect of cycling of the pill more resembled that in the cis women than the injection on a monthly basis.
The same principle apply to progesterone, but there is no need to follow the cycling pattern of cis women. One can cycle it every 48 hrs versus 24 hrs for estrogen. This has the benefit of acting as an anti-androgen (suppressing LH), whereas by following the pattern of cis women, one may have a period where T is higher, this is not good.