(1)  A court, on its own motion, may from time to time confer a reward on an offender who has been fully or substantially complying with the conditions of a drug treatment order (including such an order made by another court) by doing one or more of the following:

(a) varying the treatment and supervision part of the order;

(b) varying or cancelling an order under section 27M(1)(c) ;

(c) making an order that some or all of a period for which the custodial part of the drug treatment order is activated under section 27M(1)(d) , but which the offender is yet to serve in a prison, is no longer activated;

(d) conferring on the offender any other reward that the court considers appropriate.

(2)  Under subsection (1)(a) , the court may do one or more of the following:

(a) add or remove program conditions;

(b) vary core or program conditions, other than the core condition attached under section 27G(1)(a) , for example to reduce –

(i) the frequency of treatment; or

(ii) the degree of supervision; or

(iii) the frequency of drug testing.