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May 6, 2020 at 4:33 comment added erz I think understand how to do that, but I decided to present the theorem I referred to (which is not hard by the way), since I was going to post a complement to your answer with a more detailed explanation.
May 5, 2020 at 19:23 comment added Anton Petrunin @erz, yes, it can be done this way, but this theorem is hard (and I do not know its proof). Instead one may directly apply existence of arbitrary small path connected neighborhood.
May 5, 2020 at 7:00 vote accept erz
May 5, 2020 at 6:55 comment added erz Do I understand correctly that the control of the diameters of the curves comes from the fact that any locally path connected metrizable space admits a metric such that every ball of diameter less than some fixed number is path connected? Or is there a simpler way?
May 5, 2020 at 6:37 comment added erz @მამუკაჯიბლაძე local path connected + connected implies path connected: the path components are open and disjoint, and therefore there is just one such path component
May 5, 2020 at 5:01 comment added Anton Petrunin @მამუკაჯიბლაძე X is assumed to be locally path connected (perhaps), likely one may do the same with a weaker assumption.
May 5, 2020 at 4:50 comment added მამუკა ჯიბლაძე Why is it possible to connect $x$ to $y$? Are you assuming path connectedness of $X$? I think the assumption is connected but only locally path connected?
May 5, 2020 at 4:16 history answered Anton Petrunin CC BY-SA 4.0