- Syllabus for GATE and IES is almost same. don't take both as different things.
- Core branch syllabus is same for IES there will be subjective paper so you have to practice for that also.
- In IES there is general ability and Current affairs section is also besides that technical paper which means that you need to study arts field's also. so half an hour a day for that is sufficient.
Congratulations for your clarity about yor future . You can refer to Time meterial. They generally have seperate package at their coaching centres and online as well .