Q: Could the lower forces be easily managed by living in the silence?
If the silence has strength in it — is not too neutral.
Q: Does the presence of silence always include peace?
When the silence is there, there ought to be peace — if not anything deeper at least a mental peace in the inner being.
Q: Could one stabilise the silence from the beginning?
It can be done sometimes — though entire stability is not usual in the beginning.
Q: Does the silence need any supporting in order to sustain it for long?
What do you mean by supporting? Usually the silence when it is there is sufficient to itself — it needs no support.
– Sri Aurobindo