Have I left it too late to put grow-through supports on my dahlias?

[WellTidy]

I started my dahlias off just in eight 30cm wide plastic pots, and they’re now maybe 40cm high. Plenty of leaves, a couple of buds on each. They’re meant to grow to 75cm high. The supports are 60cm tall (but I will sink them into the ground a little, so they won’t be 60cm above ground level).

I’m now at the stage of putting them into the borders. They are fairly bushy, and I realise that I should have put the supports on them when they were smaller, but the supports are wider than the plant pots so would t have worked whilst still in the pots. Is it too late to put the support around the plants in the beds as best I can? I don’t want to damage the plants but I know that they will get much bushier than they are now and the grow through supports are so much better than using canes. Supports pictures below.

Only way to know for sure is to try it. If the plants are too tall for you to get the grid on, can you use twine or something to weave in and around the plant for support? (If the circular top is detachable from the supports)

I saw some supports in a garden I went to last week that were in parts, so you can put them afterwards. Like L shaped wires with a hook, that you link to one another to make a triangular or square (or I guess whatever sided shape you want) support.