Experience with switching SSRI’s

Hi! I am wondering if anyone has experience with switching from one SSRI to another. I have been on sertraline (Zoloft) for going on 6 years. I have noticed that over the years i have had to gradually increase my dosage for the same therapeutic effect. I’ll be in remission for 6 mos, 9 mos, 2.5 years all within increasing dosage and now I’m on the maximum dose. During the past 5 years i have gained about 130 pounds. But im actively working on that. My sertraline is not packing the punch like it used to. I used to have maybe 1-3 anxious or ocd days a month, now i am having close to 15-20, my depersonalization is creeping up a little bit on me too, i have been able to function and maintain my household and attend school and work. Before medication i was quickly disabled because i was in ocd thought loops all day and couldn’t catch a break. So for that i am thankful. My psychiatrist suggested that we do a direct switch on my medication. go from 200mg sertraline to same dosage 200mg fluvoxamine (Luvox) i obviously know that i don’t feel as good as i once did, im still sleeping well, which wasn’t the case before, i wasn’t sleeping eating or even remembering to brush my hair so much so that i had to cut some of it out because it was so knotty because i was so terrified of the thoughts i was having and all symptoms that came with it. It’s like a monster that haunts you and follows you and wants to get you. I am so scared to switch my medication, the sertraline combined with buspar is the only thing i have ever been on and got so lucky when it worked wonders… i am sad that im having to switch. I am also nervous as to what my brain is going to do when it gets another pill for the first time and its so used to getting the sertraline daily. I am nervous to experience an exacerbation of symptoms. I’ve came so far in my healing journey and i know im capable of dealing with a lot of what ocd brings, i just know i should feel better than i do right now, and have more good days than bad. I know something doesn’t feel right and that in itself means it’s time for a change. I’ve been contemplating this medication change since October 2023. I have been about 7 months with more bad days than good. If anyone has any encouragement or advice it would be greatly appreciated. My psychiatrist seems to think the switch is the first thing we need to do, and he hopes that the only outcome is i feel better and wish that i had listened to him months ago about switching.