While the recognition solves the problem, it isn't clear that drastic action is required for a few months in the EU.
While in Germany anyone can avail of the European Health card, so there is no problem if is there is an accident. If a non urgent problem arises then probably you'd get this work done in Ireland anyway. Being away for a couple of months does not change your formal residency in Ireland. The VHI International premium is based on you getting private treatment abroad and this may not be very likely in practice. Young people without pre-existing conditions are more likely to break a leg or whatever, which can easily be dealt with in the public system. A travel policy with repatriation might be all that is needed.