Episode 5 of 1000-lb Sisters season 4, titled Greatest Thing Since Sliced Bread, aired on TLC this Tuesday, February 14, at 9 pm ET.In the episode, Tammy was seen getting excited about her doctor's appointment, as she finally weighed under 550 pounds, which was a requirement to get weight-loss surgery. During her 8-month-long stay at the rehab, Tammy reached her goal weight of 534 pounds and by the end of the episode, she had lost another 2 pounds.Dr. Smith said he was proud of Tammy and that her achievement left him "speechless." Tammy also thanked the doctor, stating that she could not have done this without his help and praised him for sending her to rehab. However, she still needed to get the approval of several doctors, like the cardiologist, to make sure that she could withstand the surgery. View this post on Instagram Instagram PostDr. Smith also needed final clearance from Tammy's therapist Dr. Connie, with whom she had to attend six mandatory sessions. Tammy admitted in a confessional that it was difficult for her to talk in front of the therapist. She had refused to open up or be evaluated by her, even ending the meeting early in one of the sessions.Tammy did not want her therapist to hold her back when she was this close to the final surgery. Tammy's family members also said that getting the "psych evaluation" was going to be tougher than getting the "physical clearance" for her surgery.1000-lb Sisters fans agreed with Tammy and her family, as they too felt that Dr. Connie would not give her a final clearance letter, given Tammy's rude behavior against the doctor.Mayrabella 😷👩‍💻💃❤🏋️‍♀️♍@mayrabella101Tammy you better be nicer to that therapist next time. #1000lbSisters2Tammy you better be nicer to that therapist next time. #1000lbSisters1000-lb Sisters fans are concerned that Tammy won't get her surgery despite reaching her goal weightWhen Tammy initially started rehab, she spoke nicely to Dr. Connie, but as time progressed, she became meaner. Despite gaining 10 pounds and losing her dog Little Bit, Tammy did not disclose any of this important information to her doctor and instead asked her not to evaluate her.Hence, 1000-lb Sisters fans were worried that Tammy wouldn't get the surgery in spite of her significant progress. They asked her to behave nicely in front of the therapist.Ash@AshUnapologeticTammy’s therapist waiting for her to beg for clearance after refusing to cooperate… #1000LbSistersTammy’s therapist waiting for her to beg for clearance after refusing to cooperate… #1000LbSisters https://t.co/24cprSKL5Xvanilla flava@vanillaflava1The therapist isn't going to sign off if Tammy doesn't talk. #1000lbSistersThe therapist isn't going to sign off if Tammy doesn't talk. #1000lbSistersColin Brinkley@cb_yellowjacketHope Tammy can get on good terms with her therapist! #1000lbSisters3Hope Tammy can get on good terms with her therapist! #1000lbSistersluv_2_h8_zillas 🇯🇲🇨🇺🇩🇪@luv_2_h8_zillas#1000lbSistersTammy still needs the sign off from the therapist...she better do a hair toss, check her nails AND that attitude!2#1000lbSistersTammy still needs the sign off from the therapist...she better do a hair toss, check her nails AND that attitude! https://t.co/dCp8vNmKiFMina Crider Green@Madame_WiladinaReally hope Tammy wants this surgery bad enough she will be allow herself to share and be uncomfortable with Dr. Connie or else no surgery for her. #1000lbsistersReally hope Tammy wants this surgery bad enough she will be allow herself to share and be uncomfortable with Dr. Connie or else no surgery for her. #1000lbsistersM.J.💛@misslika68Psych evaluation? #1000lbSisters2Psych evaluation? #1000lbSisters https://t.co/T5PE8sNl8Elilmssunshine761@lilmssunshine76#1000lbsisters Tammy likes not talking to her therapist#1000lbsisters Tammy likes not talking to her therapistDennis Velez, M.A.@TheDennisVelez“She seems cool. I like her.” #1000lbSisters2“She seems cool. I like her.” #1000lbSisters https://t.co/qYCWnJSgSfMeredith amoroso@MeredithAmorosoTammy better make nice with the therapist #1000lbsisters31Tammy better make nice with the therapist #1000lbsistersTammy weighed 717 pounds when she was admtted to the rehabThe 1000-lb Sisters star weighed her most when she had to be admitted to rehab. Soon after joining the facility, Tammy had a death scare as she had to be put in a medically induced coma. Her oxygen level was very low and she even had to get a trach to be able to speak/breathe. View this post on Instagram Instagram PostAfter getting discharged, Tammy lost a lot of weight but also gained 10 pounds, which set her back. Her family was also worried that Tammy would revert to her old habits, but she was able to lose 185 pounds without any medical procedure.TLC airs fresh episodes of 1000-lb Sisters every Tuesday at 9 pm ET.