So is this falling apart for us?

I've been with my husband for close to five years we have beautiful children, but a rough relationship. For the last 61/2 months I haven't been sexually attracted to him and can't get the guts up to tell him to "tone up". His weight wasn't such a problem when we got together considering he is a BIG man of 6'4" 315lbs. But being a small woman I can't comfortably have sex any more, he's told me he's lost a little currents weighing 460lbs. But it is shedding so slowly, should I be patient and see or should I say something to him?