Any remedies for mouth sores?

Figured I would start a new discussion since I'm new and mouth sores hasn't been discussed for awhile. Was hospitalized for severe Covid in 2020 and on oxygen for a long while but am fully recovered except for two weird ongoing symptoms (thermostat issues, addressed in another discussion) and Mouth Sores. These usually hit me 3-4 times a year, have lessened some since 2020, but have had them twice now the last 3 weeks. Starts with a raw feeling in my throat (during my 2020 Covid I had the worst sore throat ever!) and then lesions (raised bumps or sometimes linear) appear on the roof of my mouth. My dentist has prescribed Acyclovir - tho not sure how much it helps. I see Lysine discussed.... anything helping to get over this faster? They always go away within a week to 10 days.