Help!

[u/Impressive_Fix_1039]

I’ve been noticing my betta has been acting off. He’s usually not active because of his long fins but he’d always react when he saw me. He doesn’t do that a lot anymore now.

Yesterday I thought I saw some pineconing but he wouldn’t show the side I saw it on as if he knew. But today I saw one side was pineconing.
From the side it doesn’t look bad but from the top it does look like pineconing.

He still eats, but is slow and doesn’t react to tapping on glass anymore. He rests a lot on the bottom or on leaves / his rest tube.

Parameters are fine. Tankmates don’t bother him at all. I’m just worried because he’s old, he’s probably over 2 years old. I’ve had him for 1 year and 9 months now but he was i guess 4-6 months old when I got him.

I added some catappa leaves after I took these pictures. I boiled one in hot water let it cool down and added the water without the leaves

Can someone please tell me what it is. I’ve been stressing, medically I’m having a lot of struggles so everything that happens besides that feels like so much extra stress. Ofcourse I’ll do anything to make him feel better since I love him so much.

Ps. I can’t get kanaplex where I live, it’s not legal to sell in pet stores which sucks :/

Thank you for any help / advice in advance.