Waterflossers are better than nothing. Best is floss to get the stuff wedged at the contact, then interdental brushes to get the stuff under the contact - these must be snug, otherwise you’re not effectively using them.

Soft and small toothbrush, preferably an electric with a pressure sensor. The counter oscillating Crest/Oral B type is probably the most affordable. Don’t need to get the top model. Some only time 2 minutes instead of 30s, so I’d recommend counting to 30 seconds (properly! Not rushing!) and do a quarter of your mouth at a time. Point at the gumline a little when you brush, approximately 45 degrees. You just push your lips and tongue out of the way. Do an extra minute after you’re done with 2 minutes. Do this at least twice daily, consider a third time during the day, and you must not skip the one just before you sleep. Do not consume anything but water after this and prior to sleep. Do not get a midnight snack.

Use neutrafluor/prevident 5000 toothpaste, or clinpro 5000. Extra fluoride means extra protection from acid challenges. Use neutrafluor mouthwash if you must use a m/w during the day. Do not rinse the paste off your teeth.

Eliminate where possible from your diet anything sour, tart, or fizzy. That includes soda water and citrus and ACV. Eliminate where possible sweet things, including fruit - especially dried fruit.

Rinse with plain water after eating and drinking. Common triggers are foods that may be fried, fatty, and or spicy. Some people are triggered by dairy or lactose, or eating too late before lying down.

Treat your heartburn by prevention, not relievers. If you experience any symptom relating to heartburn, rinse thoroughly with plain water. Do this too if you vomit for any reason.

If you have dry mouth, try Xylimelts or the new range Freshmelts (this doesn’t seem toxic to dogs). You can wear these during your sleep. Also treat the origin of your dry mouth.

…I’m sure I have other tips… But these are the most common ones I make to my patients.