I don't want to do anything?

So I've recently gotten back on sertraline, been on it for about 3-4 months on a pretty low dose (50 mg) and honestly it's been helping a lot with so many things, like low mood, anhedonia, suicidal thoughts, irritability and anger issues (seriously, everybody's been saying that i've become so much nicer to be around, and i myself am very happy to be in control of my emotions for once), and especially anxiety. Like god, i am so glad to not have panic attacks literally every time anything in my body hurts because i immediately assume it's cancer and im going to die.

So because of all that, i REALLY don't want to get off of it, because i was MISERABLE before. That being said, my problem is i kinda don't want to do anything? Like, i mean more so long term but also in general, i just feel like a vegetable all the time, it's so hard to make myself do anything at all. I just wanna lay down on the sofa or in the bed and idk watch videos or play videogames or scroll my phone. Everything is so much of a chore and i really am struggling to actually like, care about anything enough to put in the effort too?

I know it probably sounds really bad and like I'm being lazy but i don't really know how to explain this, it's never been this bad and I've never had this much trouble with motivation before, and I've been actually depressed for most of my life since my early teens and I have ADHD too

How can I deal with this without getting off the meds? Is it maybe something that will get better and I should just give it time? Should I ask to increase the dose?