Syzophrenia. Else should be done.

My mom is suffering from syzophrenia from last 10 years,, initially the problem was recognised as depression and she dint get the right treatment, so sometime she was stable and sometime not, from last three years she got the right treatment and dr. started 'Amazeo od 200' in morning and olanzapin 20 mg in evening,, this medicine was given for three years and she gain some weight and when she misses the dose for 2 or 3 days she started feeling hallucinations and become irritate from the persons whom she didnt like few years back. and from last one month she was unstable even when medicine was continue so dr. changed the medicine and started blonitas 8mg in morning and evening and olanzapine 20 mg in evening. and he told us that medicine will continue for life time. please tell me, is she under right consulation or something else should be done. 🙏