I think it really depends on whether he's been falling asleep on the breast or does he completely break off and go back to sleep independently (I'm not judging either way!). If it's the latter, then I don't see why a cup and a gentle hug shouldn't be a substitute. If it's the former, then it might be more tricky. You might want to check out advice on the 'props' board or have a look at this sticky on the 'gentle removal plan' from Nightwakings (talks about Elizabeth Pantley's book, No-Cry Sleep Solution). The gentle removal plan is not a quick fix so if you want results by April you may need to start asap. I think that you could experiment with settling him without any milk as well and see what happens.
Good Luck
P.S If you really don't want to wean there are mums who experience a break from their LOs even for several days and return to find a still keen nursling. Of course, it's entirely up to you.