First brew effect of temp changes

[Bernie C]

Hi all, my first brew is coopers craft, at day 5 I reached fg of 1.008 at 18c, I’m now at day 7. Days 4 to 7 I tried to keep temp stable at 20 however had temp fluctuations between 17 to 24 and now back at 22. My fg is still constant and I’m unsure whether to hold at 22c for longer or cold crash up to day 10. 
my questions are, what effect will those temp changes have? What temp should I apply and for how long? Any comments appreciated. 
cheers. 

Edited September 29, 2020 by Bernie C
Corrected temps.

[Journeyman]

AFAIK temp fluctuations are most risky early on in the ferment - my understanding is that after that the yeast has decided what characteristics it has so temp changes need to be a bit more extreme to cause problems.

Your temps are within 'normal' range for ales so I think it will be fine and they reached high enough I think you can trust your SG reading to be showing FG.

I'd call it done and cold crash it (if you can) then bottle or keg.

[Bernie C]

Thanks for your advice, it’s now in the fridge cooling down.