Managing post exertional malaise

It’s been about five weeks since I got Covid, and I am struggling with the push-crash cycle of post exertional malaise. I was feeling good over the weekend and foolishly pushed my body too far with a 45 minute walk in the woods. Three days later I am still almost completely incapacitated by fatigue and plagued by muscle aches and headaches. My husband wants me to push myself a bit through the fatigue by getting back into our normal routine of walking the dogs for 15 minutes in the morning (which I had been tolerating), but I am not sure if that is a good thing to do while I am in the crash recovery phase.

I would like to get some advice on whether I should strictly rest until the fatigue subsides, or if it is better to add some light exercise into the mix so I don’t decondition even more. Honestly, I am terrified that I might do something that will prolong the fatigue, because it is having such a negative impact on my ability to work.