New member from Montreal

Hi everyone, I'm an amateur gardener and I love to watch my plants grow, especially the tomatoes. We're having a very hot dry but humid summer. Most of my toms are in large containers. Currently growing Japanese Black trifele, better boy. gold medal (the GM's are in the ground), sweet 100s, purple cherry Sungold, and a yellow Cherry, Green Zebra, Tigerella, and. Super San marzano.
I'm getting some cracking on the shoulders . I have a question. Should I remove the toms as they start to show the blush? For what I'm reading, I should do this before I water so they won't crack.
Also, unrelated to tomatoes, my two cucumber plants have just died on me for the first time ever.