help with periodontitis

coming to the realisation that i most likely have Periodontitis :( i’ve struggled with bulimia nervosa for around 4 years (kicked it now, finally) and sensory issues which makes it difficult for me to go to the dentist. since the start of this year i’ve bought an electric toothbrush with a sensitive brush and brush for two minutes twice daily, have been flossing twice daily and using mouthwash after. hoping to tackle my fear of the dentist soon, but is there anything that i could be doing in the meantime to improve it? i know that professional intervention needs to happen, just wondering what i can do to help until then?