The DSMR protocol does request that the actual session be carried out at an opportune time and to apply retrocausal healing, so would that help avoid any liability of doing back-to-back sessions of deep subconscious work?

There are a number of advantages of having that wording within the DSMR protocol. There is really no liability in doing the LHP and the DSMR session back-to-back, but having that wording within, allows additional strategic flexibility, because there is a clear intention to strike while the iron is hot, to go where it will be most effective and when, and that will come into play among the many, many repeat sessions that are done with the Protocol. Keep in mind that your launching is the first of many, many replications that will be enacted by the divine realm on your instructions. And there are many ways that timing things with the right conjunction can be a just-in-time preventive measure that will keep horrible things from happening much more readily than attempting to heal a tragedy that has fully decimated a life and those of many the person depends on.