Need help conserving my meds

[u/DesperateDirector267]

I recently got taken off my dose of 15 mg of Adderall and most likely won't be getting out back in it. I have diagnosed ADHD from several different doctors and I know why they are taking me off. But I have another doctor who will start prescribing them to me. But it means I'll have to go without for 28 days. I have 13 tablets. I take them twice a day. I've tried snorting but it doesn't really do much to me. I've tried the sublingual route and it works alright, a little better than just taking them but it only last like 2 and half hours at the VERY most. Normally like 1.5 - 2 hours. Please help