Visitor Visa for Father - 4 months in US only - H1B - Short time?

I have moved to USA 4 months back on H1b visa. I want to invite my father on visitor visa for few weeks. Is my duration of stay in US is too short to invite and what’s the recommended duration of stay to improve visa stamping chances?

Please provide your suggestions…

No, it is not short. Your father visa has nothing to do with your stay in US.
The chances depend on various factors and not directly tied to your stay.
Check the process below