Blossom drop - after the latest heat wave :(

[NarnianGarden]

My beloved plants are pushing lots of lovely flowers, but many of them just drop off. The 'joint' seems to snap, instead of growing strong enough to support the new life. I tried apple juice, as shown in some YouTube gardening videos, but no effect.
Some of these 'drop-outs' even include tiny tomatoes... so at least the pollination was succesful.

Today I tested a new foliar spray that is supposed to help the plant to get the nutrients back. It seems there is a severe phosphorus deficiency (that happened in the June heat wave too... and the leaves turned happy green again after the weather cooled) and it might affect the blossoms.

Sad - here I am rejoicing over my giant tomatoes But the heat is too much for them. Praying for strength, resilience (for the tomatoes and the gardener) and cooler weather...