Hello,
There are many available flouride toothpaste in the market. You could use any of them. I would personally advice you enafix toothpaste if available in your area. It has more flouride then regular toothpaste that will prevent further decay if used twice a day. Post a few months you can switch back to colgate total
You could use gummex as a gum paint to massage your gums.
Health Tips
more important then brushing is gargling every time you eat something. just like washing hands prevents spread of corona washing mouth regularly leads to Lessing of tooh decay and other teeth issues