I flowering amaryllis

[mr bartley green]

I've had an amaryllis for years. There is 3 or 4 bulbs in same big pot. The leaves are a good two ft tall but it hasn't flowered for at least 3 years. It's in a sunny spot near a window..and it seems to like where it is as the leaves are tall and green but it hasn't flowered for years. I water it and something add some baby bio so what am I doing wrong

 

[MoreRootsMoreFruits]

Never grown them sorry but this website I've given a link to below seems to have some good info:
https://www.evergreenseeds.com/why-isnt-my-amaryllis-blooming/

I had a quick look and according to that it seems like too much nitrogen can give you lush green leaves but hinder flowering like a lot of plants so maybe wait a while and then try a bloom nutrient instead of baby bio.

I use the biobizz products called: 'bio-bloom' and sometimes also some 'top-max'
I usually get it from amazon website or ebay. It's not cheap but it's strong stuff though, you only need a drop in some water. Use less than what it recommends on the bottle to start with or you can possibly burn the leaf tips. I make a very pale, weak solution if I'm not sure; just a faint tint of colour in the water.

The article also mentions too much water or lack of soil aeration.
It also mentions the plant needing a dormancy period.

Just some thoughts though based what I read there but you may get some other more experienced replies.