600mg high dose?
with AAS, more is always more, simple as that
if you can gain off of 300mg deca a week then thats fine but you could also just stay natural lol
try a gram for 20 weeks, then youll see some gains
arent you cycling and coming off after your cycles?
dont use deca if you intend to do pct. just dont.
look up the half life. deca is completely not suited for someone who ever intends to run PCT