All other things equal (consistent income, deductions, etc), you can change your withholding but adjusting the form W-4 from your employer. This means that your paycheck will be lower with the additional withholding so you will not have access to it during the year, but the additional withholding will give you a larger refund. Ultimately, it's just a trade-off in when you receive the funds.
The W-4 may be adjusted a few different ways, but the best option for you will be adding a specific amount of additional withholding. For example, if you are paid twice a month, adding $50 per pay period for the full year will increase your refund by $1,200 ($50 x twice per month x 12 months).
