Sorry about your tomatoes. They look grim.

Need considerable info to even attempt to resolve your challenges.

How big a container are they in? Length by width by depth?
And how many in each container?

Are you fertilizing?
If so, with what? what strength? and how often?

As for watering, I trust looking at the potting mix (or soil, when in the garden) and feeling.
How deep is it moist?
Does water run out the bottom when you water?
How often do you water?

Seems like whats happening is they were are low on nutrients, started showing the signs(mainly yellow leaves from not having enough nitrogen) especially now that its blooming it uses more. You noticed and were hoping it was just lacking water and added even more which if anything probably made matters worse by keeping the roots from absorbing what little if any nutrients are left if any from the miracle grow soil.

Of course this just speculation and my theory of whats going on, considering Im assuming that they have not been feed besides what nutrients were in the potting soil. If there were the case I would let the soil get back to how you had it and FEED it!!

Mine are looking the same way. Growing some tomatoes but looking wilted and turning yellow. My plant is in a very large pot outside. In direct sun. I water daily as the temp gets in the high 90's. I fertilize about once per week with liquid Miracle Grow. Are mine getting too much water or sun. It has good drainage and I'm treating it like I have all others in the past 15-20 years.

That mostly looks like an advanced deficiency/toxicity. The symptoms are really not that easy to distinguish from one another (like Zn, Mn look basically the same, etc).

If you are not feeding, start feeding. If you are, then stop. Measure water pH and if possible the hardness. Measure runoff pH.

Denise, probably best to post photos, or start your own thread with pics.