Plantar fasciitis & Morbidly obese

New shoes or new inserts and change inserts every three months and new shoes every 6 months, even if they look ok.
I wear Brooks BEAST, they are for big heavy people, Go get a plastic Plantar brace at the pharmacy to sleep with. It holds you foot to and "L" shape and it seam to help. Make sure your shoes are wide also.
Good Luck

You need to stretch regularly. Keep a towel near your bed, loop towel around one foot and pull on ends to stretch, hold stretch for a minute, repeat, and now do other foot. Do that before you get up. *****Do not go barefoot. *****Put your shoes on before you get up. Always wear good shoes and insoles. Arch supports!
During your day try to get up and stretch hourly if you can. Pushing toe area against curbs if outside. Etc. You can freeze bottles of water or even tennis balls to roll your foot over.
Don't let blankets weigh down your feet if you sleep on your back. Try propping up knees so feet are in a more natural position. This is what those braces at night do.

Beyond this....An Orthopedic Doctor can possibly give you cortisone shots. <<<<Extremely painful but can help for a short while. Eventually they can go in and cut tendons similar to carpal tunnel surgery. Personally I ended up ripping mine so while tender surgery was no longer an option.

I used to work standing 12+ hours on concrete floors. Still put my shoes on before getting out of bed. I never go barefoot unless at a pool. Rarely bothers me anymore. Hasn't flared up bad since around 2002 here.

Good luck.

I would make sure you have the correct footwear. I wear Asics Keyano and they are amazing and I feel like my feet don't hurt AS MUCH. I think there's nothing that takes the pain away completely unfortunately

The "do not go barefoot" advice mentioned above is huge. I've dealt with this for a long time now - the first round lasted a year. And now I always, always, always wear shoes. From the minute I get out of the shower in the am to just before I go to bed. And I have to have shoes with good support in the arch. I love Doc Martins but they are so flat on the inside that if I wear them for any length of time without inserts I start to get that plantar pain back. You can get OTC inserts but if it's really bad you may want to get custom orthotics.

As someone with plantar fasciitis and formerly much heavier:

Go to podiatrist and get the diagnosis confirmed. This will include x-rays to see if you have heal spurs as well. Cortisone shots may be done to help calm the nerves, but will not completely eliminate the pain. The doctor will probably recommend custom orthotics, which unfortunately are quite expensive ($350 - $400) and not covered by most insurance. However, they will last for years and are extremely worthwhile to get a pair for the shoes you wear the most (i.e. your work shoes). For exercise shoes, get Superfeet green inserts. They are full length so they won't move around in your shoes, and you custom cut them to match your feet. I have multiple pairs, so that I don't have to move them around between my different pairs of running shoes.

Use the heal stretching boot and the frozen water bottle to help reduce pain.

The biggest things that helped, though, were losing weight (removes pressure from your feet) and getting fit (strengthens feet). Every time my plantar fasciitis has flared up, I knew I had gained too much weight.

inserts help a lot. My hubby had to get a cortisone shot and inserts in his shoes but he said the inserts at Walmart (around $50) were just as good. Some machine you stand on and it tells you your problem. I have had plantar fasciitis also, it comes and goes.