Thanks for your patience. There's no presumption that upon divorce, a spouse's assets will transfer to their child under UK law. Normally the courts are only concerned with making sure each spouse has fair financial provision, which includes making sure there is enough for them to look after their children.
If you are effectively seeking nothing from the financial settlement or seeking to donate your share to your child, then perhaps you are going about this the wrong way. If the court awards you the retention of a share of the property, it's then yours to do what you wish with. This could be one option.
Another could be a declaration of trust, with you both acting as trustees for your son (as beneficiary) to effectively be assigned your share of the matrimonial asset.
Your proposition isn't unreasonable, but obviously needs careful thought as to how it can be managed as the court won't want to tie your wife into a specific property for the remainder of your son's minority by way of this proposal.
So as things stand, you don't have to agree to coming off the deeds. You can stick to your guns and wait out the process as it progresses through court and gets in front of a judge.
I trust that this answers your question? Can I assist you further today?