Groceries?
You can get lightweight groceries. And you can pack bags that weigh only as much as you can handle.
My biggest problem in life is getting groceries out of my car when I get home and into the house.
They have people at some of the nicer grocery stores that will help you get your stuff into your car. Heck if you're nice I'll even do it at Walmart if you give them a chance.
Drive your bus to the store and have them load it for you!!
If someone has congestive heart failure is on oxygen or uses a scooter all the time for mobility... A mobile RV or school bus life is going to be pretty difficult to manage By yourself.
But here's the thing... You can drive your bus to an area with good coverage on websites like care.com and purchase help!! Cleaning... Housework... Etc ...
Another half measure is to get a crane like you'd put in the back of a pickup truck for lifting engine blocks. Put that by the handicap door. Then you can handle lifting cargo and getting it raised up.
That doesn't take up that much space and would actually lift stuff up for you.
I would imagine logistically it would work better next to a handicap door than a front door with steps.
Get a bag like they have from waste Management... The bag dumpsters. A small bagster. You can load all groceries into that bag and then lift it all up at once.
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