Golden sunrise @madhoo ji
Please don't think much over best time , best position and outcome of meditation or any specific result.
One of The motive for doing meditation is to calm and relax the mind with its thought pattern .
When you got sleep during meditation is wonderful enjoy your sleep and relax .
Please don't feel bad for not finishing the meditation .
The GOLDEN heart blessing meditation at our website is a sample with method.
U can create your own blessings and you can carry on with it any time as per your convenience