i feel so behind and like it‘s all too much

i‘m a 2/ year old uni student and i‘m really struggling. i remember struggling back when i was in school (that might have been the worst time ever) and while uni is better than school and i’m better than i was back then, i’m still really struggling. i was diagnosed with adhd last summer and i’m glad i was cause i thought i was just stupid and going crazy, but i’m now in my 6th semester for a major thats only supposed to take u 6-8 semesters and everyone i know is finishing this or next semester but i know i’ll need longer and it makes me feel so stupid and behind in life. idek if i can finish it at all idk if i’m smart enough. i started medikinet and i’m on 40mg now but idk if its helping. i couldn’t do more for uni these last few semesters, so now i just have so many exams and essays i still have to do and it’s very overwhelming and i don’t even understand how i’m supposed to write this one essay (idk if we ever learned this, but if we did, i forgot). i went to my academic advisor and he said if i need more than 8 semesters i’ll have to put in a request, but it’s usually never denied (even for people who don’t have any reason (like diagnoses) other than just needing more time), he said it’s not problem. but i just feel so much pressure because everyone i know is either already writing their bachelor’s thesis or writing it next semester. and i’ve talked to several people about this and they all tried to comfort me but nothing they say really made me feel any better. some said. if uni makes me feel this bad then i should drop out, but i don’t want to. going to uni has always been my dream. i just want to finish it and then i’ll be happy i think. and knowing i’m in uni (which is what i dreamed of) does make me happy m, like knowing i achieved that, and i do like my major and want to work in that field, but i’m so overwhelmed, i feel stupid, i’m not happy (tho i don’t think uni is the only reason for that), and i just really don’t know what to do. when i ask my professors questions they look at me like i’m stupid asf, cause i should know these things by now. i’m on a waiting list for a therapist, but it’s another 5 months till she has a free spot for me. she said if it’s an emergency she will find time for an appointment but idk if this is an emergency. i really don’t know what to do and noone can help me, i feel like such a failure