Dose - Subutex as substitute for poppy grounds

[baron samedi]

Since July SWIM has managed to get himself pretty much addicted to poppies (grounds rather than tea though).
Whereas in July he was only needing 10 grams or so of grounds to get high, after about 3 months of daily usage he now needs between 45 and 55 grams of giganteum (along with grapefruit juice).
He saw an addiction psychiatrist who agreed to try him out on subutex rather than meth, for obvious reasons.
However, given that they had no prior experience with poppie users, the shrink assumes that the level of morphine is pretty low, which SWIM believes may not necessarily be the case.
Hence, SWIM's initial dose of Subutex is likely to be extremely low, which worries SWIM somewhat.
He knows that morphine content varies widely from pod to pod and batch to batch, but can anySWIY offer him a very rough equivalent dosage of subutex to compare with 45 to 55 grams of Giganteum grounds?
Just SWIM is worried his shrink is woefully underestimating the strength of the pods he is using.