The23rdMan, if you don't have a mobility problem then just keep doing the active meditations the best you can. I went a long time doing the seven step meditation with eyes open. After a while I stayed deep in the meditation. Then one day I just noticed my eyes weren't opened. Of course I had a little balance problem once I notice, but I got back into the meditation and thing smoothed out again.
Do the best you can and be relax and happy that whatever you practice happens to be, that it is the best thing for you at that time.
You are perfection.
Iam2