You've already had the most important advice--GOOD shoes and a slow developing program.
Your other point, that you've kept the same exercise/food routine but aren't losing any more weight--maybe BECAUSE you haven't changed things out. Our bodies adapt (sometimes too well) to routine. Trying a totally different cardio--swimming or biking, for instance--could stir things up.
Also, especially at our age (I'm pushing 60) strength training is probably more important for overall health than cardio. We tend to lose muscle mass as we age, (I don't have the figures, but they are easy to find on this site or a medical one) so without a good strength routine, we are setting ourselves up for problems. Walking/running is great for helping maintain bone health, but you definitely want to add bands, weights or machines for a more complete health program (and if you already are, forgive me; it wasn't in your post).
Every moment is unique, unknown, completely fresh. ~~ Pema Chodron
* + * + * + *
If nothing changes...nothing changes.
| Pounds lost: 10.0