No. It is reasonable for you to have a hard copy of the proposed IEP to take home and read over more closely, and/or to discuss with other educational rights holders, family members, independent assessors, independent service providers, or someone else before deciding whether to sign and provide consent, consent in part, or refuse consent. You may not be able to take the original document home with you. Your child remains eligible for special education services and the previous IEP remains in place while you decide whether to consent or consent in part.
If you do not consent or file for due process in a reasonable period of time, then the district may file for due process.