Youre fighting a losing battle.
Getting the coffee ground for you is never going to enable you to get the rich extraction you are looking for.
3 minutes after it is ground, it is really past its best.
The likelihood of the grind being correct for a good extraction is not great, and the grind required changes according to age and weather conditions.
I know it sounds blase, but try to save up for a decent grinder, otherwise you are not going to get the best from your Silvia.