Backstory: I have DS with ex and am expecting our second child. We separated early on in this pregnancy. He refused to talk to me about contact with DS and chose to go through the family court who granted him with what I offered anyway, so he completely wasted a few thousand pounds. He has said that he wants contact with this baby but obviously that wasn't decided through court as it isn't born yet.
He pays the minimum maintenance each month for DS but hasn't contributed anything towards things for this baby and hasn't mentioned doing so when it is born.
Would it be unreasonable to email him all of the receipts I have for things bought for this baby and ask him to contribute something towards it?