Making a sacrifice or fasting or giving charity or supplicating or doing any noble act are very good and it makes the possibility of accepting our Du’a much more , but no one knows when and how Allah (SWT) will Grant us our wish because He Knows all past, present and future. We must submit to the Will of Allah and seek Him Mercy and never suggest on Him our own timings which might be harmful for us. We leave our needs and wishes to Allah (SWT) and request and supplicate to Him to Grant US’s the best which He Knows. No doubt, sincere worship and dedication have an effect on our supplication.
Wassalam.