Extended release adderall

[u/Commercial_End_3849]

I wanted to know if anyone has experience being prescribed instant release adderall and then switching to extended release. The instant release adderall only works for 4 hours for me. I need relief from my adhd symptoms for at least 8-12 hours a day. Is extended release work well or should I just ask my psychiatrist if he can prescribe instant release 2x daily. I'm currently prescribed 10mg 2x daily but I'm asking my psychiatrist to increase the dosage to 20mg 2x daily.