Sorry to be the bearer of bad news, but there is no more new money coming for a few more years, so this isn't for a few months. Budget allocations are roughly set out for the next 3 fiscal years, so don't expect much to change before the next election, unless they do a complete 180 on the funding cuts that are part of DRAP.
It's all compounded by the work on the subs and the MLRs, and the rest of the fleet are unfortunate side effects. As the MCDVs are maintained under the ISSC, there are significant short term NP savings associated with parking the boats in extended readiness.
There are obvious operational impacts, but when the other alternatives are the harbour tugs, fire boats or the other auxiliaries that are needed for normal operations, it's the lesser evil (weevil?).