Most simple code for getting multiple plots into 1 subplot?

I have a figure that gets created like this:

import plotly.graph_objects as go

fig_init = go.Figure(data=[
    go.Bar(name='Bla1', x=df.x, y=df.y1), #
    go.Bar(name='Bla2', x=df.x, y=df.y2),
])

fig_init.show()

Now I would actually like to make this figure a subplot. I figured out I could do this:

fig2 = make_subplots(rows=1, cols=1)

fig2.add_trace(
    go.Bar(name='Bla1', x=df.x, y=df.y1),
    row=1, col=1
)

fig2.add_trace(
    go.Bar(name='Bla2', x=df.x, y=df.y2),
    row=1, col=1
)

But I wonder is there a shorter way/code to put the 2 bar plots into a single subplot? This would be useful, because I actually aim to put 4 bar plots into a single subplot. E.g. Is something like this possible?

fig2 = make_subplots(rows=1, cols=1)

fig2.add_trace(
    data=[fig_init.data[0]],
    row=1, col=1
)

but without losing the formatting and layout of fig_init?