Hi,
so why you just don't delete those items from your client's basket? It is easier than you might think, just try it! The most of online shops have this option, Shoplet and it's reviews https://shoplet.pissedconsumer.com/review.html are the brightest examples.
Delete the 2 others and use the 1 item to motivate you to save for it. If your waiting to have enough for free shipping make sure to order it when you need something else.