How to fertilize a Phalaenopsis in spike?

[Orchid grower]

Hello everyone!

It has been sometime since I have posted here and a lot has changed with my setup. I moved and now have a dedicated sunroom/den for my phalaenopsis orchids and they are so happy!! They get sooo much light now and I can see the results.

3 of my orchids have now spiked. It's very early on for 2 of them with me just discovering one of the spikes this morning. To date my fertilizing schedule has been weekly weekly and I use "grow more urea free 20-10-20" fertilizer.

In the past when any of my orchids have spiked they only produce 2-3 flowers and sometimes the tip of the spike will almost shrivel or just stop producing buds. I want to avoid this happening this time around.

So my question is should I change my fertilizing schedule at all now that they have spiked??

Also is it necessary to stake the spikes as they get longer?

I would also appreciate any general tips on how to alter my care so that my phals produce the most flowers. I have been waiting for this moment for so so long.. so excited.

Thank you to everyone in advance!