In short and simple, my honest answer would be NO: by then you are not facing any more exponential vegetative growth but more of an initial stretch that ends in the plant focussing exclusively on the colas and buds. The purpose for topping is to redirect the plant growth from one cola to 2. As no more colas will be forming at the stage just leave your plant be.
My personal advise would be to LIGHTLY defoliate so to allow more light to directly shine on the colas and main bud sites. The more light penetrate to the flower, the bigger they will get.
Do let me know of this makes sense to you and do not hesitate to drop a DM if I could be if any more assistance.
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