You may want to check signalled RG discussions: https://www.researchgate.net/post/any_one_please_tell_suitable_solvent_for_PLA_polymers https://www.researchgate.net/post/Solubility_of_PLA https://www.researchgate.net/post/Have_anyone_dissolved_PLA_with_1_4_dioxane_and_DMSO https://www.researchgate.net/post/Is_there_a_common_solvent_exept_trifluoroethanol_for_dissolving_both_PLA_and_gelatin
All current solvents would be toxic. So no short-term solution. If you have time, it would be best to investigate 'green solvents'. Deep eutectic solvent systems would be my starting point, since the chemistry is broad, and non-toxic and environmentally friendly DES solvents have already been generated.
Below are a two theses on a similar theme which you may find useful.