Hello, I'm new to the forum too and I live across the country from your in sunny East Lothian
What type of area do you live in? Are there many trees/bushes etc. What about your garden? Are there lots of cats about? Just trying to build a picture of why you may not be getting as many birds as you hope for. If you've only just started to feed them it'll take time for them to arrive, but you should persevere and hopefully Mr. Robin will bring his friends (although he doesn't have many as he's a territorial little guy!) lol