The way to trade something like this is to think either the Oct 16 support of 23.35 will hold or it won't. If it doesn't, then we are straight down to 21.75, ie it's unlikely to bottom in between these prices. So you can either enter here and add at 21.75, not higher (but with the same 21 stop), or even wait for 21.75. Conversely if this is the bottom, we'll know when it breaks 26, allowing you to add (and move the stop up to 23).
One sore point is that the keeping missing on , presumably from its major component NYSE:ALB. Hopefully, this will get better, but the trade should be managed carefully through the next (Q3) date, which for ALB is Nov 6th .