Assalamualaikum dear, I saw a notification of your message but akhon oita pacchina so eikhanei reply dicchi. Firstly niche porlam Tomar shorir kharap, I hope you're doing better now In Sha Allah praying for your fast recovery. I can understand the pain of being sick recently amaro onek jor Kashi chilo :(
As for A levels girl it's honestly the worst amader sir yoh bolse university o naki er theke better. Tbh thing is o levels amra 8-9 class thekei Aste aste prep niye di while A levels e proper Ekta one year o time thakena eto bishal new complicated concepts shikhe mone rakha tough Hoye jaye Jodi onek beshi effort na dawa Hoye which I unfortunately am regretting now. Like time tai shobai bole Ekta big factor hoyto aro time niye onno seating e beshi revise kore Dile oneker helpful Hoye but Ami toh 3 mash porei dichi In Sha Allah time onek kom and onek pressure just hoping for the best
O levels niye beshi chinta korona oita Hoye jaye ektu effort dilei. Tomar 2 years ase it's more than enough time, akhon theke Aste aste prep nao and coachings parle start kore dio. Maths and chem Ami duibar kore korso 2 bochor bio phys ekbar e korsi one year kore but Amar koekta friends shob e 2 years kore korse taile Hoye ki 10 e Tomar mostly revision Hoye and pore shesh e Tumi last few months yearwise qp solving beshi kore korlei it's easy good grades.
Take it one step at a time and remember to enjoy your life among all these studies too.
Subject choosing amio science nisi lol yes commerce peeps have more fun but tbh science subs more interesting ( ektu harder ) but nevertheless interesting and eita Nile pore Tomar career opportunities onek thakbe. You can go do business even after studying science but commerce pore future e science fields e jawa ta uncommon.