@Flash1955 please don't beat yourself up. I am 12 weeks today and only just started walking up stairs like an adult. Paid for it next day as pushed that little bit too far. Swelling, so obviously put paid to most things except good old ice. I refuse to beat myself up any more, take each day and praise yourself for the slightest achievements. It's taking me still to today to walk properly but I am getting there, not going too far but at least each day a little better. And, that's the secret with this nuisance that's hanging around with us, you cannot rush it, it will only do things when it's ready. So, try to praise yourself, don't let PT tell you what to do, you don't need them. I had two sessions and been doing ok on my own. We have the support here, fabulous advise, fabulous people, together we can do it. As @Qdogpa says, time is our friend xxxxx
United Kingdom
Good Morning you are doing everything right for this stage in recovery, going up and down stairs are still difficult for me and I'm at the 6 month mark, but I know that eventually one day it will be natural.
) enjoy the beautiful English weather ( likewise here in the Algarve we have woken to a glorious sunny day

You may want to wait a couple weeks before trying that as you don't want to irritate any of the newly healing tissues. I still do it today (even 7 years later) as it just feels good to get a deep stretch into the knee, then shift the position slightly to stretch the back of the other leg. 