what g.h are you running mate ?
if i were you id run 5i.u e.d minimum
i used to pin in the morning however lethargy was a prob so id recommend pining late at night well after evening meal (1-2hrs after ) but it doesnt matter if you pin it day or night , timing of food intake is paramount . you will find people in both camps r.e am or pm
basically i make sure my g.h is ready before i go to sleep . i then pin it 2 hrs after eating or whenever i wake up during the night . could be 11pm or 2am etc ...
if you were to pin a high dose such as 10i.u e.d then i would recommend splitting it . 5i.u am and 5i.u pm for example . but since you suggest about 5i.u e.d then theres no need to bother
you really need to have a long term view with g.h . 6 months would be considered minimum to see real gains (however well being would become apparent in a few weeks ) . myself ,my intention would be to run it for a year at least . if not forever ...
if you do run g.h for a good length of time then you should consider t4 as it works well in combination, if not required . there is some good info on this in this section particularly some info posted by marcus300 but i dont have the link . im sure another member will provide