This is an issue for me also.
We seem to let him score at will through mid-wicket, square-leg and behind square. A lot of them are singles, admittedly, but before you know it he's got thirty plus and is set.
It's not defensive to set fields to cut off these areas - starve him of his easy runs and make him play into areas where he's less comfortable. That in itself is a form of attack. Also, try different angles of attack - I can't recall anyone bowling round the wicket at him.
Failing that, bore him out. Just bowl at the top of off-stump every ball until frustration gets the better of him and he tries to do something to break the shackles. McGrath used to do it for the Aussies and even the great West Indies attack of the '80s would resort to it, on the rare occasion a batsmen managed to blunt their usual method of attack. Unfortunately, you need bowlers with the requisite skill and discipline to make that tactic work and I don't think we have them - we always seem to bowl one 'release' ball per over for a batsman to score from.