Yes, delepine on secondary bromide is said to not work.
Azide swap in DMSO or DMF as a solvent will work good for secondary bromide.
Direct amination has to bee done under pressure in pipe bomb, and elimination is a major side reaction in this synthesis.
You prolly prefer the azide route, reduction is very quick and easy w/ Zn/NH4Cl and yield will be higher. Azide is found in ~100g from a driver airbag, and twice that amount from passenger one. Extraction is easy in water, then crashing out with EtOH. Beware the solutions are very toxic, react with acid to form explosive hydrazoic gaz, and with various metals (as those in the pipes) to form explosive and toxic salts, dispose accordingly.