Tomatoes

The tomato saga.  Well I keep trying and I'm not happy with the results.  The Sweet 100 cherry tomato that's in the topsy turvey is not looking good and only had 3 tomatoes so far.  The flowers are not producing.  Some stems started to yellow.  I don't know if it's a disease so I sprayed it with a mixture of neem powder, water and a few drops of dish soap.  I had to strain the neem mixture twice so it would not clog the sprayer.
I also used it on my BHN 602.  That one seriously has problems.  Four tomatoes on a plant that's taller than me.
The other tomato plant that I purchased last week started getting spots on the leaves two days.  I'm returning it tomorrow.
I'm not giving up so I purchased a Husky Cherry Red today and will plant it in a 5 gallon container.  I drilled holes on the bottom. Keeping my fingers crossed!