Making the most out of short-term saving?

Hiya!

Apologies if this has been asked a billion times already, but I’m not the most financially literate person and could do with some help understanding how best to save over a shorter term (2-3 years).

I’m planning on making a large (for me) cash purchase in late 2027/early 2028, and wanted to know how to maximise my savings over this period. I’m hoping to set around £6,000 a year aside for this, which should leave me around £15,000 if I don’t account for any sort of returns or interest.

How can I boost this final number? I will struggle to set any more cash aside based on a couple of budgets I’ve put together.