Wanting to pick a name that will make a cool nick name out of the whole name. IS there any website that will help me do this and make picking names easier...ANYONE KNOW if so please let me know thank you

I don't know of any website that does that, but here are some names with nickname potential:

Girl:

Anastasia (Ana, Stacy, Stacia, Tasia)
Aaliyah (Ali, Lia)
Aurora (Rory)
Briella (Bri, Ella)
Caeriann (Caeri, Ann)
Evangeline (Eva, Angie, Lina)
Eleanora (Nora)
Diondra (DiDi)
Desdemona (Desi, Mona)
Delilah (Lily, Lilah)
Fiona (Fi)
Giovanni (Gio, GiGi)
Gabriella (Gabi, Ella)
Holiday (Holli)
Isabeau (Izzy, Beau)
Juliet (Juli)
Janelle (Jan, Elle)
Jazmyn (Jazzy)
Jolie (JoJo)
Jocelyn (Joss)
Kenadie (Keni, Kenna)
Kasper (Kass)
Lucille (Luci)
Maranie (Nia)
Penelope (Penny)
Persephone (Pepsi)
Rosalie (Rose)
Sunshine (Sunny)
Tallulah (Lulah)
Trinity (Trin)
Vivienne (Viv)
Valerie (Val)

Boy:

Azhiel (Aze)
Azrael (Aze, Ray)
Ashton (Ash)
Bentley (Ben)
Bennett (Ben)
Calvin (Cal)
Cameron (Cam)
Desmond (Desi)
Dominic (Dom)
Elijah (Eli)
Gerard (Gerry)
Gabriel (Gabe)
Jedediah (Jed)
Jaidyn (Jay)
Lewis (Lew)
Nikolai (Nik, Niko)
Phoenix (Nix)
Reagan (Ray)
Regent (Reg, Reggie)
Stanza (Stan)
Seven (Sev)
Teagan (Tea)
Vincent (Vin)
Victor (Vic)
Xavier (Xay)

Boy? Girl? Are you pregnant? Just think of names you really like, then see if they transfer to nicknames that work/you like.