Your question is a special case of the question that I answered in complete detail herehere, where I gave an explicit fast algorithm that can be used to compute the return times to any interval. Your problem is essentially the case of $\alpha =0$, which is especially easy to compute. The integers you are asking for are very evenly spaced- a generalized arithmetic progression with two alternating moduli. So yes, the distance between consecutive integers that do what you want is bounded.