I struggle with shortness of breath as well. For many reasons too.
I think the anxiety around it really increased the stress of it as well. I purchased a fitness watch that has 0xygen levels in it as well as heart rates and alarms to notify if my rates are out of alignment. That helped me feel a little bit like I had some control.
I also learned that different activities affected me differently.
I had to also give myself some grace .
I shop through Amazon or instacart now. I use automatic vacuum, dishwasher etc to help relieve any physical burden. I save energy for what is important. I found working on my computer gives me activity to challenge my mind but at times I am sure even that can be hard for you.
When I have a day that is especially hard , I try to rest where I can see outside, it lifts my spirits.
I hope you are encouraged to day ! Prayers for you