Csect Postpartum Belly

Im 2 wks postpartum from csect but my belly is stil big like 5 mths pregancy. Been putting on binder 6hrs per day but doesnt seem to improve. Couldnt commence on post natal massage too as i am still recovering from pupp rashes throughout my body. The therapist said i have to recover from the rashes first before i can start on body massage as their oil might irritate my rashes further. Is there any other things i can do for my belly to shrink a little faster? 1.5mth mre to go before returning bk to work.