TIS Pay adjustment

I enlisted in July of 2018 into the national guard and then took an rotc contract in 2019. Went on to do the SMP contract thing and then commissioned over to active duty in December of 2021. I’ve done 31 months of active duty time and just now found out that my time in the guard counts towards TIS for pay which will take me to 6 years time in service. So i just did all the paperwork and got the 1506 done through my retention NCO and it’s past finance and at DFAS now. Looking at a large backpay now for the 31 months and a nice little raise. Anyone else gone through this? How long will DFAS take? I’m literally calling up every person i know that had guard time to make sure they knew this so they can get their money. I spent all my time in the guard hearing idiots shove the idea down my throat that if i switch to active duty none of my time mattered so i guess i just never even thought to look into this.