An Alternate would be to push towards the Kaghan Valley that's a six -hour travel from Islamabad and can be done in the weekend (e.g. leaving Friday lunchtime and overnighting in Abbottabad) - but better to system three or more nights if you can. Watch out for landslides even so https://maps.app.goo.gl/3pgqKTY4pBUEm3Dz7