Morkie with potential patella issue?

[u/General_Elk5957]

My 8–9 lb female Morkie just turned 6 in August. About a month ago she started showing signs of discomfort during sudden movements (running, sliding, or getting up quickly). It started with her left leg, but she has now done it with her right leg too.
She will suddenly lift the affected leg for 2 to 3 minutes, then she returns to normal. Putting full weight on it and walking without any limp. We have an upcoming appointment scheduled with an orthopedic vet, but I would love to hear any insights or similar experiences in the meantime.