The process of transformative dynamics as modeled is eternal if the initial entropy problem can be fixed
Richard Tolman in " Relativity, Thermodynamics and Cosmology" which is now available in dover book press is a 1934 dated Clareon press release which stated that entropy from cycle to cycle would increase.
If a bouncing universe exists , then some means of avoiding incremental increases (or more than incremental) has to be found.
I proposed in November 2017 in Frontiers in Fundamental physics 15, in discussions with several astrophysics people that there could be a procedure in which a multi verse version of cyclic conformal cosmology ( a variation I have discussed with people ever since my article proposing such, in Hindawi press
http://www.hindawi.com/journals/ahep/2014/230713
could be used to introduce multiple universes feeding back into an initial universe partition function, i.e. see formulas 34 and 35. A bit more work along this line would establish that there would be a range of initial entropies fed back into the starting new universe, and if the range of entropies was , say averaged out, in the restart of the universe conditions as given in Eq. 36 that this with some additional analysis would lead to a stable initial entropy, for re creation of a new universe, and there by avoid the Tolman build up of entropy crisis from cycle to cycle.
If one does not have this sort of averaging, as I am proposing, then there would be by necessity, some other form of procedure.
I will address this issue fully in a future publication which I will introduce in both Dice 2018 and also in the 15 Marcel Grossman meeting, in Rome Italy in 2018
Thanks for raising this issue.
If this Tolman entropy crisis can be nipped in the bud, then one can have an infinite number of restarts of the universe.
I am in the process of setting up an analysis of just this issue for Dice 2018 and also Marcel Grossman 15
Stefan, your question is excellent and I hope I have answered it.