My bad,
I’m still not 100% sure of what you want to do, does this fit your needs ?
fig.append_trace(trace1, 1, 1)
fig.append_trace(trace2, 1, 1)
fig.append_trace(trace3_0, 1, 1)
fig.append_trace(trace3_1, 2, 1)
fig.append_trace(trace4, 2, 1)
fig.append_trace(trace5, 2, 1)
I found the inspiration on this “”"“related”"" topic: Subplot with multiple y axis