Normal for this plant to shed leaves often?

I have this plant here , *name unknown*, i have it as an indoor plant and it receives indirect light about 6 hrs a day ... however i have notice that the leaves change from green to brown very quickly and the bottom leaves which are bigger and older shrivel and dye off within 1 to 3 days . I can't say for certain if it is dying as there is new growth , i'm just worried that the rate of the leaves dying are greater than the new growth.....can anyone shed some light on this?

 

Hi!
It's an Aeonium arboreum.

 

More light, a larger pot, and a little fertiliser will help it keep its leaves better.