Hi bobo66,
They look right for harvest to me but as long as your plants drink up your feeding fast, they still want to do stuff.
When the pots stay wet/heavy its the end of the circle for them.
So as long as they want to drink you can eighter give them water(not flushing, just normal water amounts) so the last nutrients in your soil and plant (leafs) will get used
or you still give them nutrients and flush later.
I like the idea when they still drink and give them some water instead of flushing. With flushing you also create a little bit of a shutdown and the plant will take days to drink it up.
There is also a trick that some growers do and that is to put them into darkness in the last 2-3 days, make sure that the pots are not wet, this is a starf technique, They will stress a bit and produce more THC.