I recommend you ask your SW how frequently they are going to contact you. This gives you an 'in' for contacting them, stops you going crazy.
e.g. If you haven't heard anything for 4 weeks you can drop an email asking if there is any progress.
We also used holidays as an excuse for getting in contact 'We are thinking of booking a holiday next month, that won't cause any problems will it?'
We had a deal with our SW that she wouldn't tell us of potential links unless/until the SW wanted to meet us and she thought it would work 'we had a child but it transpired she had major learning difficulties so I said no as you had said mainstream school'.
We had 2 occasions where SWs visited us and another couple and the others were chosen. After that our SW said no more unless we were the only ones as it was too heart-breaking.
We went to an exchange event and found some children, but a birth family member came forward.
It took us 15 months after panel for our girls to come into our lives. But we had 4 'near misses' before them, so about 1 every 3-4 months. We could have had a link immediately but turned it down.
Holidays, meals out, all those jobs in the house you've been meaning to get around to.