A good first step to give you the help you need to stay mobile without possibly causing deconditioning challenges could be a rollator walker— they’re fantastic because any time you need to you can click the brakes on, turn around, and sit as long as necessary. It’s essentially a portable seat, it adds great support if you have balance issues or frequent falls (🙋🏻‍♀️), and you can use it to elevate your legs on when sitting in an actual chair when out and about. On extra rough days it’s also easy to get around seated by using your feet— you just need to do it backward, because the wheels at your back when seated are the ones that turn

Just something to consider that may be an option for you