lexapro losing it’s effectiveness? anyone have this experience with ssris?

I have been taking Lexapro 10mg for 5 years, since 2019. I’m a 24 yr old F. I started in college and it changed my life, panic attacks, anxiety, not eating, all went away and I was just normal again, it was amazing. I honestly forgot what anxiety felt like and I just took a pill at night and forgot about it! Fast forward to 2022 January, I was graduating and was going through relationship issues and was smoking a lot of weed. I started to forget to take my meds for like 8 days, during those days each day I forgot I got worse and worse. Having so much rage, crying, anxiety was off the walls, not eating, not sleeping much. Eventually on my 7-8th day, I wasn’t sleeping, I couldn’t eat at all, I was awake for like 24-48 hours at one point because my anxiety, researching trying to find out what was wrong with me, didn’t wanna go outside etc. Then finally went to the hospital, took a xanax and I was finally able to calm down and find some relief. Saw a psych for the first time in like 4 years at that point, I explained everything that just happened, he raised my normal dosage of 10mg to 20mg and then added serequil for sleep? Whatever I took it and I started just having these awful nightmares so I started looking into what serequil was and realized it was a antipsychotic and was like wtf and immediately tapered off of it. On 20mg at the point, I started leveling out a bit but was still having shit anxiety, so I eventually saw a new doctor and she was like let’s just switch you to a new medication this obviously isn’t working for you anymore. So I started to taper off and once I hit 10mg of lexapro, it was like everything was fine and back to normal. I was just happy finally and eating and not anxious. So I stayed in that and that’s what i’ve been on for the past two years still. But in these past two years i’ve stilled struggled with anxiety, bad thoughts, overthinking, eating is shit for most of the time just depends on life factors I think, constipated, oversleeping sometimes, under sleeping sometimes, depressed sometimes (especially around my period, then i’m back to normal. Just really not consistently good like I used to be. My question is- What do I do? I’m healthy terrified of switching antidepressants because I don’t want to get worse, but i’m also not happy at all where I am. When I was on 20mg of lexapro I felt overstimulated all the time and still anxious (like it was maybe too much for me) and 15mg was the same kinda at that time too. Should I try to increase again and see if that takes the edge off? have I just grown tolerant to it and going up is what I need to do? Or do I switch? I’m terrified. Only thing that makes me feel normal is diazepam and I only take that when I absolutely need it (maybe once a month lately). Sorry for the long read and thank you for any advice in advance.