بسم الله الرحمن الرحيم
If a father wants to distribute his property during his lifetime among his children then it is better that he gives equal share to each whether it is son or daughter. For example, he can make five shares and give 1-1 share to each. But if it is against expediency then he can distribute it according the rule of inheritance and make seven shares. Out of which he can give 2-2 shares to each son while 1-1 share to each daughter. He should give it into their complete possession.
لِلذَّكَرِ مِثْلُ حَظِّ الأُنثَيَيْنِ.
Allah knows Best!
Darul Uloom Deoband