Use aromasin or letrozole less rebound and just better tbh.
And add tamoxifen it helps with local aromatization in the growth plate and crushes ERA AF2, which is important for growth
Add more erda ancillaries like saffran extract, dorzolamide/timolol eyedrops, colesevelam, loperamide, and something for your nails
Also, don't use creatine just buy mycrocristaline cellulose. It's cheaper and better for geometric dilution.
You should also add cilostazol, pentoxifylline for cAMP synergy, and abaloparatide. Abaloparatide also helps with growth because of the effects of pthrp on the growth plate and also helps with bone density, which is important because you want to use erdafitinib.
Just use HGH at 70+mcg/kg/day or preferably 100mcg/kg/day it's expensive but worth it
You should use AAS if you want to grow preferably non aromatizing androgens. They support growth and can increase growth velocity, and bloodwork isn't needed.
Additionally, you could also use stuff like ky19382, Way316606, and Way262611 to increase Wnt signaling, which is also important for growth.
Ky19382 showed increased longitudinal bone growth in mice, while Way316606 and Way262611 only showed an increase in bone density.