Batman

Very new to this and have only really just started to travel a lot.

I am looking to live 6 months in Thailand on and off and six months back in the UK and am just wondering how I go about getting enough supplies for a long period. Doctor indicates that he can only prescribe 1 month at a time?

I am Diabetes type 1 and use the Levemir and Novorapid pen cartridges

Any advice would be most helpful