Rams, discus and angels oh my!

[Angelbreeder25]

Recently I started my journey to beeeding some of my favorite fish.
Currently I have 2 pairs of angelfish, 1 pair of german blue rams, possibly a pair of discus, and a pair of super red bristlenose plecos.
My angels are spawning and discus are cleaning the slates provided,!however the fish i really wanna breed are the bristlnose plecos.
Does anyone have any suggestions?

 

[Hybridfish7]

Simulate a dry season and then rain, while feeding high protein foods like bloodworms and all
(Slowly drain the tank to like halfway over a few weeks then gradually fill it up with cold water over like a week)
Also make sure they have tight caves that have a rough texture
Bamboo and terracotta work best, make sure they're just a little wider than the pleco itself