I think you mean withdraw from foreign account and deposit to Pak account?
Actually this dollar price is not that simple... basically individual bande k sale purchase karne 1% farq bhi nahi parta... hota hia yehi hia jese dollar ki demand zaida hoti hia local market dollar oper jata rehta hia... aur local market main sab se effect foreing imports and foreign payments hian... ye sari payment dollar main hoti hian... starting from rental power to petrol... aur phir ye jo luxury good recently bank ki hian ye aik bahoot acha step hia... yehi payments hian jo dollar ki price ko aasaamn pe le jati hain.
aur dosri baat ye baray institutionss like IMF, World Bank etc ye ne dollar ki price ko effect karte hian. any way still qatra qatra kar k darya banta hia... we should do whatever possible.
My few satoshis in this matter are, if you withdraw your USD then what happens is that Bank keep the USD (or any other foreign currency) and give you fiat currency (jo ky Pak rupee hy). Ya dollars directly govt ky control ma ho jatya hn and the government can use it for buying things like oil, LNG etc. local market ma float hona vala dollar government ky directly under control nhi hota.
There is huge community of freelancers and crypto investors here in Pakistan, if they withdraw then defiantly it can have good impact on foreign currency reserves.