Thank you for your answer's its really helped x

For sure, sometimes even up to 3 days!

that's not the problem

check magnesium levels

To continue.
It's really hard to get the limit of activity right and consistent.
It helps to do things slowly, if you can.
Try to commit to only one or two things a day. Try not to overdo any one thing.
Just imagine your an old person because that;s how it feels.
Don;t let anyone rush you.
Take breaks and get lots of rest.
Big👶🏻