No, 2 to 3iu HGH will not save your aas gains. If you are 45 you could keep some kinda TRT dose (testosterone), but with more frequent injections. Once every 10 days will put you on great disbalance, going up and down... even with sustanon (several esters) you'll feel the peak. If ou can, divide injections 3x per week. (0,3mls per pin)...
2 to 3iu will keep you burning fat, more healthy mind and body, better sleep, higher IGF1, great, great thing, but... aas can make cells fuller, bigger and stronger and you'll be unable to keep the size you reached.
If you can, search a Doc for TRT protocols and blood work,
Do it safe
Good Luck man